CBU had its shots down the stretch, but couldn't find a go-ahead basket late.
"The foul trouble really hurt us tonight," said CBU Head Coach Tim Collins. "That's the first time at CBU I've had four guys foul out. That was tough on us. I thought our guys did a good job getting in front of them, but we didn't get the calls. Still I was proud of the way the team battled."
CBU could find no offensive rhythm for much of the opening half, turning the ball over eight times and putting up just eight field goals.
Thankfully for the Lancers GCU was nearly as out of sync on the offensive end, converting just 10 field goals of its own in the first period.
The Lancers went scoreless for nearly six minutes midway through the half as GCU took a 21-11 lead with a 9-0 run. The Lopes would take a 27-19 lead into the break.
It was a different CBU team out of the break as the Lancers opened the half on a 9-3 run through the first 4:11, cutting the GCU lead to 30-28.
"We got in our zone in the second half and that gave them some trouble," said Collins. "That's how we got our lead, but when we went back to man to man they got back in a rhythm."
CBU clawed all the way back to take its first lead since 3:11 into the game, getting a 3-point play from Kyle Wong to go up 34-31. After a GCU missed shot, the Lancers came right back down and Wong through a beautiful lob behind the defense to Andrew Fisk who laid it in, forcing a 'Lopes timeout. CBU posted its biggest lead of the night on a fast break dunk by Fisk, going up 38-31.
GCU went seven minutes without a basket early in the second half until getting a jumper from Joshua Lowery. That would spark a 9-2 run, giving the Lopes a 41-40 lead. They would push the lead out to 48-42 by the 5:00 mark.
The Lancers kept it close and cut it to a 53-49 deficit on an offensive rebound and put-back by Fisk with 1:16 to play. After a Lope free throw, Anthony Romero knocked down a three to cut it to two with 23.8 seconds left.
GCU hit just enough free throws down the stretch, though, and a last second heave down the stretch by Ivan Patterson fell short as the Lopes took a 57-54 victory.
Patterson and Fisk led CBU with 11 points each. Cosentino added 10.
Kyle Lowery had a game high 20 points on the night. GCU's Killian Larson led all players with 15 rebounds and also had 12 points.
The Lancers finished the game outshooting the Lopes 38.9 percent to 36 percent, but were out-rebounded 45-32.
CBU falls to 9-6 overall, 3-4 PacWest, while GCU improves to 17-4, 8-2.
"These things happen when you go on the road," said Collins. "We just have to let it go and take care of business in our place on Monday."
The Lancers host Holy Names in Riverside, Monday at 7:30 p.m.