Walpole's Sarah Roof goes for the block of Medfield's Amy Festa. (Jay Connor / Globe Photo)

WALPOLE -- Stopped by Walpole High tonight for the first day of the Rebel Hoop Classic. Four teams favored in Division 2 South girls’ bracket are taking part in the two-day event; the four squads – Walpole, Medfield, Dighton-Rehoboth and Oliver Ames – came into the tourney with a combined eight losses, and could very well be the top four seeds when the pairings come out on Friday.

That said, tonight’s games were lopsided. Oliver Ames down D-R, 54-28, in the first contest; the Rebels gave Medfield their first loss in stunning fashion, 63-36, in the nighcap.

A couple notes:

• Safe to say a lot of people were looking forward to the matchup between OA’s 5-foot-10 junior forward Lauren Battista and D-R’s Boston College-bound center (and returning Globe Super Teamer) Mary Nwachukwu, but it wasn’t meant to be. With ankle problems dogging her recently, the 6-foot-2 Nwachukwu came off the bench tonight and only saw 10 minutes before sitting out all but a minute of the second half with ice wrapped around her right ankle.

  Nwachukwu still had 7 points and 7 rebounds in limited action. But with a noticeable limp and struggles running up and down the court, head coach Mark Pacheco said it’s questionable whether she’ll go tomorrow night in the consolation game against the Big Blue. Don’t be surprised, though, if she sits out tomorrow night -– as the score might indicate, Nwachukwu is an integral piece of the Falcons’ offense, and would be badly missed in the postseason.

  With her absence, the Tigers took advantage inside. The guards worked give-and-go’s with Battista (14 points, 12 rebounds) all night, giving OA a 42-14 lead heading into the fourth quarter. The defense was also tenacious – D-R shot a dismal 3-for-20 in the first half, and had made just four field goals headed into that final frame.

  “I think everybody was tight, and I think probably the fact that she (Nwachukwu) was not able to play,” OA head coach Elaine Clement-Holbrook said. “They’re not accustomed to that. So, when you miss a player like that, it takes a little time to adjust.”

• Based on tonight’s matchup, you could make the argument that the Rebels are one of the most physical teams in Division 2. Switching between man-to-man and zone looks, the Rebels overwhelmed the Medfield lineup with immense pressure. We’re talking elbows flying, bodies slamming to the floor kind of pressure.

  Both Medfield coach Mark Nickerson and Walpole coach Stacy Bilodeau both called it their most physical game all year, and perhaps nobody embodied that type of game tonight more than Walpole forward Sarah Roof (10 points, 9 rebounds). With her left shoulder draped in ace bandage ever since nearly dislocating it last month against Dedham, the senior captain harassed the Medfield frontcourt, and was out and out overly aggressive.

  This game was closer than the score might indicate –- Walpole lead 29-24 at the half. But the Rebels’ transition game got going in the second half, and the Rebels took a 46-29 lead into the final frame.