Hayes went undrafted, but he did work out for the Knicks during the predraft process, per Begley.
As a senior last season, Hayes averaged 14.0 points, 6.6 rebounds and 2.7 assists per game for the Badgers.
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The 6'8" native of Toledo, Ohio, shot 45.7 percent from the field, but he shot just 31.4 percent from beyond the arc and struggled at the free-throw line by converting at a rate of just 58.7 percent.
Although Hayes' shooting leaves something to be desired, he is a tough, gritty player with good length who excels on the defensive end.
Hayes also has a great deal of experience playing in pressure-packed games, as Wisconsin consistently made deep NCAA tournament runs during his tenure.
The Knicks are a rebuilding team that should have plenty of opportunities available, which makes them an ideal landing spot for Hayes.