Rajon Rondo was unable to join his team Friday as planned, stuck in Boston while the city was in lockdown.
He arrived in New York on Saturday, even offering his teammates some tips from the scouting report.
Unfortunately for the Celtics, he still can't play.
The Celtics badly missed their injured point guard Saturday, costing themselves a chance to win their playoff opener with a rash of mistakes in an 85-78 loss to the New York Knicks.
''Honestly, we turned the ball over a ton and I thought our spacing was horrendous in the second half,'' Celtics coach Doc Rivers said. ''I thought we stopped trusting a little bit offensively.''
Carmelo Anthony scored 36 points for the Knicks, but the Celtics held the NBA's scoring leader to 13-of-29 shooting and were generally pleased with their defense.
Their offense was a wreck.
''Very frustrating. We had a lot of turnovers tonight,'' guard Avery Bradley said. ''As a team we don't want to turn the ball over.''
Anthony had 10 quick points ...