At the ITA Regionals in Allendale, Mich., Colli reached the quarterfinal round of the C singles bracket and the semifinal round of the C doubles bracket. In singles play, he beat William Jewell, Indianapolis, and Michigan Tech, before falling to Purdue Northwest 7-6, 6-4. In doubles action, he teamed up with Janis Auslands where they were able to take down Roosevelt 9-8, 8-6.