Celts’ top draft pick Williams misses first summer-league practice

Robert Williams won't be late to practice anymore.

Robert Williams slept through his alarm and missed his introductory conference call with the media that cover the Boston Celtics the morning after the NBA draft, forcing it to be postponed.

Sunday, he missed the team’s first summer-league practice on Boston.

The Celtics selected Williams out of Texas A&M with the 27th overall pick in the NBA draft on June 21.