SAN -- A walk-off single in the bottom of the eighth inning snapped BYU softball’s 16-game winning streak, as the Cougars fell 5-4 against San Diego State Friday night.

BYU received its first loss in Mountain West Conference play at the hands of the Aztecs, after giving up a 4-0 lead in the seventh inning. San Diego State rallied to generate four runs to force extra innings and an error put the baserunner in scoring position, before a single brought her home.

With the loss the Cougars drop to 34-15 overall and 8-1 in conference play, marking their first loss since March 21. The Aztecs are now 32-16 and 9-3. The Cougars still hold the lead in the conference standings, but San Diego State cut sits only 1 games out.

Defensive errors proved to be BYU’s downfall. The Cougars totaled five errors in the contest, three of which allowed the tying and go-ahead runs to score.

Sophomore pitcher Paige Affleck (17-8, 1.92) was charged with the loss, as she pitched three outs of relief in the contest. Starting pitcher Chrisite Zinanti gave up the four tying runs, three earned.

BYU’s leading slugger Jessica Purcell got the Cougars on the board with a leadoff solo homer to left field in the second inning.

Andrea Ramirez tripled on a ball sliced up the left-center alley to bring in Angeline Quiocho from first base in the second inning, giving BYU a 2-0 lead.

The Cougars kept picking away at the San Diego State pitching staff to manufacture two insurance runs in the top of the fifth. With runners on first and second, Kristin Dealhoussaye singled to left field, as the speedy Stephanie Hopkins managed to score when the throw to the plate was not in time.

Tiffany Messerschmidt singled to load the bases for Quiocho, who stroked the ball to right field to bring in a run. Quiocho finished the day 2-for-4 with an RBI.

With a comfortable lead, Zinanti continued to dominate over the Aztec batters. Defensive errors in both the third and fifth inning put runners in scoring position for the Aztecs, but Zinanti retired the side both times to halt the scoring threats.

Heading into the bottom of the seventh BYU held a 4-0 lead. Zinanti retired the first two batters before giving up back-to-back singles. She hit a batter to load the bases and walked in the Aztecs’ first run of the game.

Erin Floros singled to bring in two runs and an additional run scored on a Cougar error to tie the game 4-4. Righthander Paige Affleck came in to relieve Zinanti and recorded the third out to force extra innings.

The heart of the BYU order came up to bat in the eighth inning, but three batters went down swinging. Only Ramirez was able to make contact for a hit; she finished the game 2-for-3 with an RBI triple.

A throwing error allowed the Tonye McCorkle to reach base in the bottom half of the frame. McCorkle stole second base and an error on the throw allowed the Aztecs baserunner to advance to third with only one out.

Affleck struck out Monica Alnes to grab the second out, but a single up the middle from Jessica Camello brought in the go-ahead run.

The Cougars look to bounce back when they return to the diamond to face San Diego State in a Saturday afternoon doubleheader set to begin at 1 p.m. PDT.

Brigham Young Univ. at San Diego State
05-01-09 at San Diego, Calif. (SDSU SB Stadium)
Brigham Young Univ. 4 (35-15,8-1 MWC)
Player                    AB  R  H RBI BB SO PO  A LOB
------------------------------------------------------
DELAHOUSSAYE, Kristi 2b..  4  0  1  1   0  1  0  5   0
MESSERSCHMIDT, Tiffa dp..  4  0  1  0   0  2  0  0   0
QUIOCHO, Angeline cf.....  4  1  2  1   0  2  0  0   0
PURCELL, Jessica c.......  4  1  1  1   0  2 10  0   2
RAMIREZ, Andrea 1b.......  3  0  2  1   1  1 13  0   0
LOPEZ, Coreen 3b.........  4  0  0  0   0  2  0  0   2
HOPKINS, Stephanie rf....  2  1  1  0   1  1  0  0   0
HICKS, Krista ss.........  3  0  0  0   0  2  0  3   1
GONZALES, Monica lf......  3  1  1  0   0  1  0  0   0
ZINANTI, Christie p......  0  0  0  0   0  0  0  3   0
 AFFLECK, Paige p........  0  0  0  0   0  0  0  0   0
Totals................... 31  4  9  4   2 14 23 11   5
San Diego State 5 (32-16,9-3 MWC)
Player                    AB  R  H RBI BB SO PO  A LOB
------------------------------------------------------
KNUDSEN cf...............  3  1  1  0   0  0  1  0   0
REIFSCHNEIDE dp..........  2  1  0  0   0  1  0  0   0
 KULICK ph...............  0  0  0  1   1  0  0  0   0
FLOROS c.................  3  0  1  2   1  0 14  2   0
 QUICHOCHO pr............  0  0  0  0   0  0  0  0   0
CASILLAS 3b..............  4  0  0  0   0  2  0  1   4
MCCORKLE lf..............  4  1  1  0   0  1  0  0   1
SIDOTI rf................  4  0  0  0   0  1  0  0   0
ALNES 1b.................  4  0  0  0   0  2  8  0   0
CAMELLO 2b...............  3  1  1  1   0  1  0  2   1
 ROSE ph.................  1  0  1  0   0  0  0  0   0
WISNESKI ss..............  3  1  1  0   0  1  1  3   0
BEASLEY, S. p............  0  0  0  0   0  0  0  1   0
 MICETICH p..............  0  0  0  0   0  0  0  1   0
Totals................... 31  5  6  4   2  9 24 10   7
Score by Innings                   R  H  E
------------------------------------------
Brigham Young Univ.. 010 120 00 -  4  9  5
San Diego State..... 000 000 41 -  5  6  0
------------------------------------------
Note: 2 outs, 1 runner LOB when the game ended.
E - QUIOCHO(5); PURCELL(5); LOPEZ 2(9); HICKS(5). DP - SDSU 2. LOB - BYU 5;
SDSU 7. 3B - RAMIREZ(1). HR - PURCELL(15). HBP - KNUDSEN. SH -
REIFSCHNEIDE(2). SB - MCCORKLE(9).
Brigham Young Univ.    IP  H  R ER BB SO AB BF  NP
--------------------------------------------------
ZINANTI, Christie...  6.2  5  4  3  2  8 26 30  97
AFFLECK, Paige......  1.0  1  1  0  0  1  5  5   -
San Diego State        IP  H  R ER BB SO AB BF  NP
--------------------------------------------------
BEASLEY, S..........  4.1  6  4  4  1 10 19 20  73
MICETICH............  3.2  3  0  0  1  4 12 13  28
Win - MICETICH (18-5).  Loss - AFFLECK (17-8).  Save - None.
HBP - by ZINANTI (KNUDSEN). Pitches/strikes: ZINANTI 97/66; BEASLEY, S. 73/55;
MICETICH 28/18.
Umpires -
Start: 6:02 PM   Time: 2:21   Attendance: 462
Weather: 70 degrees, clear skies
Game notes:
ID-778390
Game: SD1
Play-by-Play
                            The Automated ScoreBook
             Brigham Young Univ. at San Diego State - Play-by-Play
                05-01-09 at San Diego, Calif. (SDSU SB Stadium)
Score by Innings                   R  H  E
------------------------------------------
Brigham Young Univ.. 010 120 00 -  4  9  5
San Diego State..... 000 000 41 -  5  6  0
------------------------------------------
Brigham Young Univ. starters: 4/2b DELAHOUSSAYE; 20/dp MESSERSCHMID; 33/cf
QUIOCHO; 10/c PURCELL; 31/1b RAMIREZ; 7/3b LOPEZ; 5/rf HOPKINS; 22/ss HICKS;
24/lf GONZALES; 14/p ZINANTI;
San Diego State starters: 39/cf KNUDSEN; 4/dp REIFSCHNEIDE; 44/c FLOROS; 14/3b
CASILLAS; 2/lf MCCORKLE; 8/rf SIDOTI; 9/1b ALNES; 11/2b CAMELLO; 24/ss
WISNESKI; 7/p BEASLEY, S.;
Brigham Young Univ. 1st - DELAHOUSSAYE grounded out to 2b (2-2).
MESSERSCHMID struck out looking (1-2). QUIOCHO struck out swinging, out at
first c to 1b (2-2). 0 runs, 0 hits, 0 errors, 0 LOB.
San Diego State 1st - KNUDSEN grounded out to ss (1-2). REIFSCHNEIDE
grounded out to ss (0-2). FLOROS walked (3-1). CASILLAS struck out looking
(1-2). 0 runs, 0 hits, 0 errors, 1 LOB.
Brigham Young Univ. 2nd - PURCELL homered to left field, RBI (0-0).
RAMIREZ struck out swinging (1-2). LOPEZ grounded out to ss (0-0). HOPKINS
struck out swinging (0-2). 1 run, 1 hit, 0 errors, 0 LOB.
San Diego State 2nd - MCCORKLE singled to left field (2-2). SIDOTI
struck out swinging (1-2). ALNES grounded out to 2b (2-1); MCCORKLE advanced to
second. CAMELLO struck out swinging (2-2). 0 runs, 1 hit, 0 errors, 1
LOB.
Brigham Young Univ. 3rd - HICKS struck out swinging (0-2). GONZALES
grounded out to p (1-1). DELAHOUSSAYE struck out looking (0-2). 0 runs, 0
hits, 0 errors, 0 LOB.
San Diego State 3rd - WISNESKI struck out swinging (2-2). KNUDSEN
singled to center field (0-1). REIFSCHNEIDE reached on a fielding error by 3b,
SAC, bunt (2-1); KNUDSEN advanced to second. FLOROS grounded out to p (1-2);
REIFSCHNEIDE advanced to second; KNUDSEN advanced to third. CASILLAS struck out
swinging (1-2). 0 runs, 1 hit, 1 error, 2 LOB.
Brigham Young Univ. 4th - MESSERSCHMID struck out looking (1-2). QUIOCHO
singled, bunt (1-1). PURCELL struck out looking (0-2). RAMIREZ tripled to right
center, RBI (0-1); QUIOCHO scored. LOPEZ struck out looking (1-2). 1 run, 2
hits, 0 errors, 1 LOB.
San Diego State 4th - MCCORKLE grounded out to p (1-2). SIDOTI grounded
out to p (0-1). ALNES grounded out to ss (0-0). 0 runs, 0 hits, 0 errors, 0
LOB.
Brigham Young Univ. 5th - HOPKINS walked (3-2). HICKS struck out
swinging (0-2). GONZALES singled, bunt (0-0); HOPKINS advanced to second.
DELAHOUSSAYE singled to left field, RBI (1-2); GONZALES advanced to second;
HOPKINS scored. MESSERSCHMID singled up the middle (3-2); DELAHOUSSAYE advanced
to second; GONZALES advanced to third. MICETICH to p for BEASLEY, S.. QUIOCHO
singled to right field, RBI (0-0); MESSERSCHMID advanced to second;
DELAHOUSSAYE advanced to third; GONZALES scored. PURCELL grounded into double
play p to c to 1b (1-1); DELAHOUSSAYE out on the play. 2 runs, 4 hits, 0
errors, 2 LOB.
San Diego State 5th - CAMELLO grounded out to 2b (0-1). WISNESKI
grounded out to 2b (1-0). KNUDSEN grounded out to 1b unassisted (3-2). 0
runs, 0 hits, 0 errors, 0 LOB.
Brigham Young Univ. 6th - RAMIREZ walked (3-1). LOPEZ grounded into
double play 2b to ss to 1b (0-0); RAMIREZ out on the play. HOPKINS singled up
the middle (0-1). HICKS grounded out to 3b (1-2). 0 runs, 1 hit, 0 errors, 1
LOB.
San Diego State 6th - REIFSCHNEIDE struck out swinging (2-2). FLOROS
reached on a fielding error by ss (2-2). QUICHOCHO pinch ran for FLOROS.
CASILLAS grounded out to 2b (0-1); QUICHOCHO advanced to second. MCCORKLE
struck out swinging (3-2). 0 runs, 0 hits, 1 error, 1 LOB.
Brigham Young Univ. 7th - FLOROS to c for QUICHOCHO. GONZALES struck out
looking (2-2). DELAHOUSSAYE lined out to cf (0-0). MESSERSCHMID grounded out to
ss (2-2). 0 runs, 0 hits, 0 errors, 0 LOB.
San Diego State 7th - SIDOTI grounded out to 2b. ALNES struck out
swinging. ROSE pinch hit for CAMELLO. ROSE singled to second base. CAMELLO to
2b for ROSE. WISNESKI singled up the middle; CAMELLO advanced to second.
KNUDSEN hit by pitch; WISNESKI advanced to second; CAMELLO advanced to third.
KULICK pinch hit for REIFSCHNEIDE. KULICK walked, RBI; KNUDSEN advanced to
second; WISNESKI advanced to third; CAMELLO scored. REIFSCHNEIDE to dp for
KULICK. FLOROS singled to center field, 2 RBI; REIFSCHNEIDE advanced to third,
scored on a fielding error by cf, unearned; KNUDSEN scored; WISNESKI scored.
AFFLECK to p for ZINANTI. CASILLAS grounded out to 1b unassisted. 4 runs, 3
hits, 1 error, 1 LOB.
Brigham Young Univ. 8th - QUIOCHO struck out swinging. PURCELL struck
out swinging. RAMIREZ singled up the middle. LOPEZ struck out swinging. 0
runs, 1 hit, 0 errors, 1 LOB.
San Diego State 8th - MCCORKLE reached on a throwing error by 3b. SIDOTI
fouled out to c, bunt. MCCORKLE stole second, advanced to third on a throwing
error by c. ALNES struck out swinging. CAMELLO singled up the middle, RBI;
MCCORKLE scored, unearned. 1 run, 1 hit, 2 errors, 1 LOB.

PROVO -- The No. 24 BYU softball team (34-14, 7-0 MWC) travels to Las Vegas and San Diego for four games as the Cougars look to stay atop the Mountain West Conference during the road trip.

BYU aims to keep its 15-game winning streak alive with the upcoming contests. The 15 games mark the second-longest winning streak in school history. The longest winning streak spanned 16 games in 2007, when BYU went on to win the MWC Championship.

The Cougars will face UNLV on Thursday at 5 p.m. PDT before heading to San Diego State for three games. BYU was originally scheduled to face SDSU at home on April 16, but a snowstorm kept the game from being played at Miller Park. The game will be made up as part of a Saturday afternoon twinbill.

BYU and San Diego State, who were picked to contend for the MWC title in a pre-season coaches’ poll, are the last two teams to face one another at least once this season. The Cougars lead the conference at 7-0, while the Aztecs are 1 games back at 8-2.

Whichever team takes the three-game series will settle into a secure spot at first in the MWC standings.

BYU swept UNLV in a two games at Miller Park this season. The Cougars won the first game 7-1 and the second game 5-2. BYU’s pitching staff led the way as Christie Zinanti struck out 11 batters and Paige Affleck threw a two-hitter in the second game.

The three-game series with San Diego State begins on Friday at 6 p.m. PDT, and the doubleheader begins on Saturday at 1 p.m. PDT.

Livestats are available at www.byucougars.com