SAN MATEO -- The Archbishop Mitty boys basketball team did something Tuesday it wasn't able to do the last two years with superstar Aaron Gordon on hand -- win at Serra.

The Monarchs rallied from a 10-point halftime deficit to defeat Serra 50-41 and remain unbeaten in the West Catholic Athletic League.

The second half played out a whole lot different from the first half.

"The biggest thing was that a lot of the seniors gathered around and talked about how we hadn't won here the last two years,'' Connor Peterson said.

"We had this one circled on the calendar,'' point guard Matt McAndrews said.

Danny Mahoney knocked down three 3-pointers and scored 13 points in the first half as Serra opened a 29-19 lead at the break.

But the Padres, after shooting 48 percent in the first half (13 of 27), shot 28 percent in the second half (6 of 21).

"We played better defense in the second half and were in more of an attack mode,'' Mitty coach Tim Kennedy said. "Serra came out attacking all the way. Our mindset wasn't there to start the game. We got a couple easy ones to start the second half and started getting momentum going our way. Serra had all the confidence in the first half.''

Peterson scored 10 of his team-high 15 points in the third quarter, using his size to post up Serra's guards. He scored Mitty's final 10 points of the quarter as the Monarchs drew to within 37-31.

A short jumper by McAndrews, a free throw by Peterson and back-to-back offensive-rebound baskets by Ben Kone made for a 7-0 run to start the fourth quarter as Mitty (11-2, 3-0) took a 38-37 lead.

A layup by Sean Watkins put Serra (9-4, 2-1) back on top, but from then on it was all Mitty, which closed the game on a 23-4 run.

Mitty shot 50 percent in the second half (10 of 20), outrebounded the Padres 31-17 and had a 14-0 advantage on the foul line. Mitty was 14 of 22 from the line, Serra 0 for 3, a differential that made Serra coach Chuck Rapp very unhappy.

"We're at home but we shoot three free throws and they shoot 22,'' Rapp said. "How does that happen? It's awfully hard to make up for something like that.''

The Padres made 3 of 6 3-point attempts in the first half but missed all eight attempts in the second half.

"We had one turnover in the first half, 11 in the second half,'' Rapp said. "We're not quite ready to win this game. We're halfway ready.''