AMES, Iowa (AP) Iowa State was already in decent shape to earn the NCAA tournament berth that's eluded the program for seven long years.
After knocking off ninth-ranked Baylor in the regular-season finale, the Cyclones know they won't have to sweat out Selection Sunday.
Scott Christopherson had 23 points in his final home game and Iowa State rallied to beat No. 9 Baylor 80-72 Saturday night for its second win over a top-10 opponent this season.
Melvin Ejim added 15 points for the Cyclones (22-9, 12-6 Big 12), who also secured the No. 3 seed for next week's conference tournament.
It's been quite the turnaround for Iowa State and coach Fred Hoiberg, who's molded a team picked to finish eighth in the preseason Big 12 poll into a dangerous team in March.
"This was one that we really needed to really show that we deserve to be in the (NCAA) tournament. Picking us as the eight seed in the preseason and locking up that three seed, that was huge for us," Iowa State guard Chris Babb said. "We took it personal when we saw those rankings came out, and we responded to it very well."
For Baylor, it let yet another chance to knock off a tough Big 12 foe on the road pass them by.
Baylor led by as much as nine late in the first half, but the Bears went nearly 5 minutes without a point down the stretch. Baylor pulled to 66-64, but Tyrus McGee drilled a 3 with 1:24 left and the Bears followed with a crushing offensive foul.
Pierre Jackson had a career night with 35 points for the Bears (25-6, 12-6), who fell to the fourth seed for the Big 12 tournament.
Jackson's typically the one dishing the ball, ranking third in the Big 12 in assists. Against Iowa State, he simply kept it for himself. That strategy worked for a while, but when Jackson's stroke went cold the Bears didn't have anyone else to pick him up.
Jackson had 18 points by halftime, and matched his previous career high of 25 with 15:31 left on a confident 18-footer that put the Bears ahead 51-43. The Cyclones wouldn't go away, as Chris Babb's heads-up bucket off an errant White pass brought Iowa State within 53-52, but Jackson quickly answered with his fourth 3 of the night.
Christopherson gave the Cyclones their first lead of the second half, following a floater with a deep 3 to make it 62-60 with 7:02 left.
Royce White had 11 points and 11 rebounds for the Cyclones, who scored 50 points in the second half and improved to 10-0 against Baylor at home.
Perry Jones III had 10 points and 12 rebounds for the Bears, who shot just 6 of 24 from 3-point range.
The one question that's dogged Baylor all season is how it's performed against the league's best teams.
Four of the Bears' five losses came against Big 12 heavyweights Kansas and Missouri, and only the one-point loss to the Tigers in Waco last month was even close. Perhaps their best win in league play came against the Cyclones three weeks ago, when Baylor ran away with a 79-64 win.
The Bears took it to the Cyclones early, using their superior size and length to control the boards and keep Iowa State one of the better teams in the country from the perimeter from getting comfortable looks. But the Cyclones managed to tie the game 27-all late in the first half, despite hitting just two of their first 13 tries from 3-point range.
Baylor missed their first seven 3-point attempts, but Jackson broke that streak in putting the Bears ahead 30-27. Jackson buried another one, this time after McGee blew a dunk, and Baylor opened up a 37-28 lead.
The Bears had control in the second half, but they let Iowa State hang around just long enough to catch up then overtake them. Baylor finished just 1-5 against the top three seeds in the Big 12 tournament: Kansas, Missouri and Iowa State.
Baylor joined the league champion Jayhawks as top-10 teams to lose at Hilton Coliseum this season. The Cyclones finished 8-1 at home in the Big 12 this season and, by beating the Bears, appear to have their first NCAA tournament bid in seven years locked up.
Christopherson celebrated by kissing the Iowa State logo.
Jones III 5-11 0-0 10, Acy 2-3 1-1 5, Heslip 3-9 0-0 6, Miller 3-9 0-0 6, Jackson 11-19 8-9 35, Franklin 1-6 0-0 3, Bello 0-0 0-0 0, Walton 0-3 0-0 0, Jefferson 1-2 3-4 5, Jones 1-3 0-0 2. Totals 27-65 12-14 72.
IOWA ST. (22-9)
Babb 3-7 2-2 10, Ejim 5-6 5-6 15, Allen 4-11 0-0 11, Christopherson 8-16 5-6 23, White 3-8 5-10 11, Palo 0-0 0-0 0, Sledge 0-0 0-0 0, Booker 1-1 0-0 3, Gibson 1-2 0-2 2, McGee 1-6 2-2 5. Totals 26-57 19-28 80.
Halftime_Baylor 37-30. 3-Point Goals_Baylor 6-24 (Jackson 5-10, Franklin 1-5, Jones 0-1, Miller 0-1, Walton 0-2, Heslip 0-5), Iowa St. 9-25 (Allen 3-8, Babb 2-5, Christopherson 2-8, Booker 1-1, McGee 1-3). Fouled Out_None. Rebounds_Baylor 35 (Jones III 12), Iowa St. 38 (White 11). Assists_Baylor 9 (Franklin, Jackson 3), Iowa St. 17 (Christopherson 6). Total Fouls_Baylor 23, Iowa St. 15. Technical_Walton. A_14,376.