Pritchard: Celtics ‘have to prove it' after disappointing playoff finish

Pritchard: Celtics ‘have to prove it' after disappointing playoff finish originally appeared on NBC Sports BostonLast year, even though the Celtics knew they were going to be without Jayson Tatum for most of the upcoming season, guard Payton Pritchard remained optimistic that his team was still going to be good.Now a year later, the Celtics certainly know they won’t have Jaylen Brown anymore. Unsurprisingly, Pritchard’s outlook for the coming season remains the same.“I fe