If they can win 9 or 10 of those, then you have to feel really good about them. Especially in regards to East seeding.
If they win 10+ games on that stretch, they should be repping in the NBA Finals barring no injuries.
But I think they'll go 6-8 considering how tough that stretch is. And lately the Celtics have been playing well teams are starting to put a target on them now.
Lose the next 3 games entering the All-Star weekend, then dismantle the Wolves after a long rest. Then Lakers dismantle the Celtics at Staples because it's pretty hard to sweep them, size, and for the Kobe morale. Should beat Portland before losing to Utah in a b2b and because of their motivation to beat Hayward. Get two days of rest and crush the Rockets at home enrout to a 4-game winning streak against the Cavs, Nets, Jazz. Lose to OKC, Indy, and get murdered by the Bucks to end that 14-game stretch.