Knicks coach 'focused' after spat

New York Knicks coach Derek Fisher was involved in an altercation with Memphis Grizzlies forward and former teammate Matt Barnes in California on Saturday.

The New York Post, citing an anonymous source, on Wednesday reported the altercation was because Fisher is dating Barnes' estranged wife.

A person with knowledge of the situation said Fisher traveled to Los Angeles after practice on Saturday to see his children and the altercation happened that night while Fisher was attending a gathering at the home of Gloria Govan, Barnes' estranged wife.