MANSFIELD — Brendan Hill  has played in only 26 varsity games for the boys’ basketball team at Mansfield High, but he has an advantage most sophomores do not: he has watched many, many more.

The 6-foot-5 forward, who is quickly establishing himself as one of the best players in the Hockomock League, saw every game his older brother, Jeff, played in more than three full varsity seasons for Mansfield coach Mike Vaughan   from 2007 to 2010.