Da’Monte Williams made four 3-pointers on his way to a season-high 14 points, helping No. 20 Illinois hold off Penn State 60-55 on Thursday night.

The victory kept the Illini (21-8, 14-5 Big Ten) in contention for a share of the conference title if they beat Iowa and Wisconsin loses to Nebraska on Sunday. The Badgers have already clinched at least a share of the Big Ten title, and could win it outright by beating the Cornhuskers.

Jalen Pickett had 18 points, seven assists and five rebounds to lead Penn State (12-15, 7-12).

Williams scored the Illini’s final eight points of the first half, knocking down two 3s and a pair of free throws. Penn State was intent on limiting Alfonso Plummer and Trent Frazier’s looks from distance, and Williams often found himself with open jumpers.

Williams finished the game 4 of 11 from 3-point range, while Kofi Cockburn scored 11 points and grabbed six rebounds. Trent Frazier added 10 points on 3-of-6 shooting.

Illinois led for much of the first half, but didn’t hit a shot during the last 4:24 of the first half — while Penn State hit four of its final five shots of the period to take a 30-29 lead into the break.

Illinois took a 46-41 lead after Andre Curbelo found Cockburn open for a dunk off an inbounds pass, then Frazier stole the ball from Sam Sessoms and sprung Jacob Grandison for a layup with 9:21 left.

Penn State hit its next four shots, including back-to-back scores from John Harrar, to tie the game at 49. A 3-pointer from Dallion Johnson briefly lifted Penn State into the lead before Grandison hit a corner 3 at the 4:34 mark that put Illinois ahead for good.

The Nittany Lions missed 10 of their last 11 shots, including a 3 from Myles Dread that would’ve tied it at 55 with 41 seconds to go. Illinois made five of six free throws in the final minute to close out the win.

 On a poor shooting night, Illinois got just enough from its veterans, proving it can win ugly when Cockburn isn’t as influential as usual. Holding Penn State to a 3-of-14 clip from 3-point range in the second half was a big help.

Illinois hosts Iowa on Sunday to wrap up the regular season.