Or in John Groce's case, how do you do?
That's one problem Groce was looking at with just two days to prepare his Illinois basketball team for Tuesday night's game at Iowa.
Another was seeing Roy Devyn Marble pop up everywhere on the court and wondering who can stop him where.
The last was not having much time to figure all that out since the Illini (21-9, 8-8 Big Ten) played Saturday against Nebraska.
"It's unique preparing this late in the year for a Big Ten opponent you haven't played previously," Groce said.
Groce, in his first year as Illinois coach, never faced Iowa in his coaching stint at Ohio.
It's actually the second year in a row Illinois has not met Iowa until the end of the season. The first matchup last season was an Illinois home win Feb. 26. The next, on March 8, was an Illinois loss in the first round of the Big Ten tournament in Indianapolis.
This Iowa team (18-11, 7-9) has lost only twice at home, to Indiana and Michigan State. The Hawkeyes run deep, with nine players averaging at least 15 minutes.
Marble, a junior from Southfield, Mich., leads the team in minutes and scoring. He has started at point guard -- where he often posts up a smaller defender -- shooting guard and small forward, and he is third on the team in assists.
"It doesn't surprise me he has played three positions," Groce said. "He can pass, he can shoot, he can handle and he's got all the tricks -- jabs, shot fakes.
"He is just a really, really good basketball player with very good size (6-foot-6). It makes him very versatile, and it makes him a matchup nightmare."
With 23 points, Marble would reach 1,000 and become part of what is believed to be the first father-son pair who each hit that mark in Big Ten history. Roy Marble is Iowa's career scoring leader at 2,116.
The Illini enter their penultimate regular-season game with six wins in their last seven and rapidly improving play from sophomores Tracy Abrams, Myke Henry and Nnanna Egwu.
"The challenge for those guys is to bring it to the table consistently at both ends," Groce said.
Henry, a reserve, got a career-high 26 minutes and a season-high 12 points against Nebraska after forward Sam McLaurin sprained his right ankle. Groce expected McLaurin to play Tuesday.