LAS VEGAS — Kris Joseph (knee) and Fab Melo (hand) returned to the Celtics’ lineup for an 88-87 loss to the Milwaukee Bucks in Las Vegas Summer League action Saturday night. The Celtics, 6-3 overall this summer, conclude league play with a game against the Los Angeles Clippers on Sunday.

Joseph, who scored 11 points Saturday, has been part of an effective starting lineup.