STILLWATER, Okla. (AP) — The number of available players on Oklahoma State's roster continues to dwindle, and the Cowboys keep fighting — no matter the opponent.

Suspended guard Cezar Guerrero joined an increasing number of sidelined players on coach Travis Ford's team but Oklahoma State still managed to take a lead in the final 2 minutes against another top-10 opponent before losing 64-60 to No. 6 Baylor on Saturday.

Quincy Acy had 11 points and a season-best 12 rebounds, providing the go-ahead basket and a key offensive rebound down the stretch to propel the Bears (20-2, 8-2 Big 12) to another tight victory.

The Cowboys (11-12, 4-6 Big 12) rallied from a nine-point deficit to take a 57-56 lead on Keiton Page's wide-open 3-pointer from the right wing with 1:42 to play but fell short in their bid to win back-to-back home games against top-10 opponents.

Oklahoma State beat then-No. 2 Missouri 79-72 on Jan. 25, and the Cowboys had come away with two wins the only other time they had consecutive home games against teams ranked that high — beating No. 8 Missouri and No. 3 Kansas six days apart in February 1992.

"When we put our five guys out there, I feel like ... we can match up with anybody in the country and that's proven," said Page, who scored 15 points.

"We played Missouri the other night. That's a top team in the country. Baylor's a top team in the country. We've shown that we can battle with those teams."

This one might have been even more impressive, against an opponent that beat OSU 106-65 last month in Waco.

Since the Missouri win, starting center Philip Jurick has gone down with an injured foot and Guerrero got into trouble. Oklahoma State already had lost starter Jean-Paul Olukemi to a season-ending knee injury and two other point guards, Fred Gulley and Reger Dowell, left the team earlier this season.

When starters Markel Brown and Le'Bryan Nash picked up three first-half fouls, it left only five players who had logged even one minute of playing time in college.

"We couldn't have played any harder. Our guys left it on the court. We could have made so many excuses for this game but our guys laid it on the line," Ford said.

"I wouldn't say we played particularly well but we played particularly hard. Once we got the one-point lead we never really made another play. We never really came up with a big rebound, a big stop or hit a big shot."

After Page provided Oklahoma State its only lead, Acy answered at the other end with a layup set up by Pierre Jackson's drive with 90 seconds left.

"They've got so many offensive weapons," Ford said. "We took a one-point lead and they just came right back down and scored. Poof! And we knew what they were going to do.

"They called timeout and I told them exactly what was going to happen. One hundred percent, they did exactly what we said they were going to do and our guys tried everything they could to stop it."

Ford told his players to be prepared for Jackson to get a ball screen and either shoot, drive or pass the ball. He'd seen it in enough of Baylor's close games already this season.

When Nash rotated over to stop the drive, Jackson found Acy open under the basket.

"That was real big, to get the crowd back out of it because they got pretty loud. It was just a heads-up play by Pierre," Acy said.

"Everybody knows he's the guy who's looking to take the big shot now. It says a lot about him for just reading the defense and dishing to the open person."

Brady Heslip followed with four straight free throws before a rare miss — just his second in 25 tries this season — with the Bears leading 62-60 with 6.9 seconds left. Acy bounded along the left baseline to get the rebound, setting up Anthony Jones' foul shots that closed it out with 2.8 seconds left.

"That's a tribute to a good rebounder is always rebounding," Baylor coach Scott Drew said. "He could have said, 'Brady missed one free throw all year. I'm going to take this one easy.' He didn't, and that's what the great rebounders do."

"I always assume a miss," Acy said. "You just never know what happens."

Brian Williams led Oklahoma State with a career-high 23 points.

Perry Jones III added 16 points and 11 rebounds and Jackson also scored 16 as the Bears got their first win at Gallagher-Iba Arena since 2003, snapping an eight-game losing streak.

Page missed a 3 from the left wing after Acy's go-ahead bucket. He also failed in his attempt to draw a foul when Quincy Miller leaped into the air on his pump fake with the Cowboys down three.

It's a tactic he has used frequently this season, and it worked earlier in the game against Anthony Jones to earn himself three free throws.

"I got it early in the game and right there I think I just forced it a little bit too much," Page said. "I think he was straight up and down on that one. He left his feet but kept it straight up in the air and didn't lean into me too much."

Baylor got out to a 17-6 lead in the opening 10 minutes but never could pull away.

Oklahoma State scored 10 of the first 12 points after halftime to tie it at 39 when Nash went weaving through the lane for a layup. Nash was whistled for his fourth foul on Baylor's next possession, and the Bears scored the next nine points to go up 48-39 when Jackson swished a 3-pointer from the right wing with 10:20 left.