AMES, Iowa – Traveling the three-plus hours from the northern border state of Minnesota, Freddie Gillespie's family and friends certainly got their money's worth from the former Division III player. 

The 6-foot-8 junior forward recorded his first double-double with a career-high 14 points and 10 rebounds and added two blocks to help the Baylor Bears upset 19^th-ranked Iowa State, 73-69, Tuesday night at Hilton Coliseum to finish off a rare season sweep.

"We need them to travel to every game," said Baylor coach Scott Drew, whose team improved to 17-9 overall and tied for fourth in the Big 12 with Iowa State (19-7, 8-5) at 8-5, just a game out of second place and two back of league-leading Kansas State. "Freddie was outstanding. He really did a good job, really competed and played at a great level tonight. And defensively, he did a very good job as well."

Gillespie, whose previous highs were 13 points and nine rebounds against Kansas State 10 days ago, was an efficient 7-of-8 from the floor. 

"That's exciting," Gillespie said of his first career double-double at the Division I level. "I've been close a few times, but it was nice to get that one last rebound to get the double-double."

In addition to his dad, mom and sister, Gillespie's fan contingent included his former teammates from Division III Carleton College in Northfield, Minn., East Ridge High School basketball coach Paul Virgin and his high school football and basketball teammates from Woodbury, Minn. 

"He was tremendous," Drew said of Gillespie, who has scored in double digits three times in the last six games and averaged 8.2 points and 6.7 rebounds over the last seven games. "I thought the guys really did a good job finding him. He played with poise. Fourteen (points) and 10 (rebounds), he was huge today."

Freshman point guard Jared Butler hit five 3-pointers and scored a team-high 17 points, while senior guard Makai Mason played for just the second time in four games and hit four free throws in the last 35 seconds to finish with 14 points. 

"Even if he misses shots, he draws so much attention that it makes it easier on everybody else," Drew said of Mason, who was just 4-of-18 from the floor after missing two of the previous three games with a bruised toe on his right foot. "Just a gutsy performance, and obviously not practicing makes it a little tougher. But, we don't win up here without home. Hopefully now, he won't be as sore and we can get him back out there, because we like winning."

After getting off to slow starts in back-to-back road losses at Texas and Texas Tech, Baylor had an early 14-0 run and went up 19-9 on a bucket in the paint by Mario Kegler after Butler drained two 3-pointers. 

"Coach Drew pointed out that at Texas Tech and Texas, we lost those first media timeouts, the first four minutes," Gillespie said. "He said it was essential that we come out and really hit them hard and get a good thing going. That's the key to getting a good road win is getting going early."

Gillespie was a perfect 5-of-5 from the floor in the second half, when he scored 10 of his 14 points. 

Trailing 38-34 at halftime, Iowa State got its offense cranked up  early in the second half, hitting four of its first six shots and taking a 44-42 lead on a Talen Horton-Tucker layup. 

The game featured 12 ties or lead changes in the next 11 minutes, with the Cyclones leading 63-62 going into the last 6 ½ minutes. But, they hit just two of their last 12 shots as Gillespie hit a left-handed hook shot to give Baylor the lead for good. 

Butler hit a driving layup with a sweet kiss off the glass, then drained a trey that gave the Bears a little cushion down the stretch. 

"It was (contested), but it was a ball screen and his feet were below the 3-point line," Butler said. "I was just trying to win, that's it, just trying to do what my team needs me to do to win the game. Praise God, it went in."

After a steal by Butler for the Cyclones' only turnover of the second half, Mason iced the game with four straight free throws. 

"One thing about Jared is he really wants to win," Drew said of Butler, who added six rebounds, five assists and one steal with three turnovers in 36 minutes. "And when you care about winning that much, you make plays that translate into winning."

Virginia transfer Marial Shayok had a game-high 20 points for the Cyclones, who had won five of their last six to climb back into the Big 12 title race. Lindell Wigginton had 10 points off the bench, but was just 1-of-6 from outside the arc. 

Baylor dominated the rebounding battle, 44-28, and got 18 second-chance points off 18 offensive boards. 

The Bears return home for their next two games, hosting West Virginia (10-16, 2-11) at 1 p.m. Saturday and Texas (15-11, 7-6) at 8 p.m. next Wednesday, Feb. 27.