Phase 1 of Harvard’s season is officially over. For the remainder of the regular season coach Tommy Amaker’s No. 25 Crimson will deal only with Ivy League opponents.

Considering Harvard was the overwhelming preseason pick to win the Ivy title, the journey should be as pleasant as the nonconference part of the schedule, which concluded at Lavietes Pavilion yesterday with a 69-48 romp over George Washington.

The Crimson (15-2) will have a week off before playing at Dartmouth.

How good was Harvard yesterday?

So good that the sellout crowd gave the Crimson a standing ovation as the headed for the locker room at intermission with a 33-13 lead.

So good that the Crimson could go five minutes without scoring and then go on an 18-2 run to close out the first half. The team appeared to be extra motivated by an Amaker timeout chat before the run.

So good that the Crimson limited the Colonials (6-11) to one basket in the final 11:37 of the first half.

So good that GW didn’t even take its first shot until three minutes into the game, didn’t scored until nearly five minutes in.

Amaker looked back on the past two months with satisfaction.

“Our defense has been our calling card,’’ said Amaker, looking at a stat sheet that showed his squad limited GW to 15-of-50 shooting. “That’s the thing that allowed us to be successful so far. A lot of good things we can use from this point forward.’’

Amaker also pointed out that the Crimson had been playing a shorthanded, with junior guard Christian Webster (hip) and freshman guard Corbin Miller (thumb) sidelined with injuries.

“Hopefully, we can get those guys back and be a full strength,’’ Amaker said.

The Crimson looked impressive from the start yesterday, breezing to their 23d straight win at Lavietes.

As has been the case throughout the season, different players filled different roles. Laurent Rivard (16 points) stepped into his usual slot as a 3-point threat (3 of 4) and Steve Moundou-Missi came off the bench with 16 points, including 7 of 7 from the floor.

The Crimson are not only good, they are deep. Amaker can pick and choose players off his bench to fit situations.

Moundou-Missi, a 6-foot-5-inch freshman from Cameroon, via Monverde Academy in Florida, slipped easily into a scoring role.

He came to Harvard with the normal basketball pedigree - local Player of the Year honors - but also as a national champion in a math competition. Both of his parents played for the Cameroon national team in the 1980s.

Rivard, a legitimate outside threat, said the team is ready for whatever comes.

“We started the season very well,’’ he said. “The last three or four games were a little harder and we didn’t play like we wanted to play. I felt today we showed the crowd and the other team what we were about.’’

The next goal is clear.

“Keep it up,’’ said Rivard. “More intensity. Ivy League games will be a tough ones, especially on the road. We can’t take any game lightly.’’

Forward Kyle Casey (7 points), a 6-7 junior forward, is one of the veterans on the roster who needs to provide leadership entering the Ivy schedule.

“No let up,’’ said Casey. “We’ve made it through a segment of our season. We have to keep working and play our brand of basketball and we’ll be all right. We can’t get complacent and think we’re hotter than we are. That’s up to the veteran guys who have been here and had their hearts broken before and stay hungry because we haven’t done what we came here to do yet.’’

That’s win an Ivy crown and earn an NCAA berth.

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