Loyola (14-8, 5-3) is currently third in the league standings. Goretti (12-12 overall) is sixth. They are on course to meet in the first round of the BCL tournament.
"This was a game we should win," Robertson said. "We had the game under control. (In the second half) we didn't do the simple things we needed to win."
Kyle Logan opened the third quarter with a 3-pointer, extending Goretti's lead to 25-14. Loyola responded with an 11-0 run to even the score at 25 with 4:09 remaining. The teams traded baskets over the next two minutes before Carlos Somarriba's one-handed putback of Brian Cosgrove's missed shot gave Loyola the lead for good at 31-30.
Short jump shots by Reggie Gray to end the third quarter and Somarriba to start the fourth quarter gave the Dons a 35-30 lead.
"We dug ourselves a hole and couldn't get a clutch offensive play to get out of it," Robertson said.
Goretti pulled within 40-38 with four minutes left, but didn't score again until Logan hit a 3-pointer with one second left, and the game out of reach.
It appeared early that Goretti would put this game away early.
Loyola missed its first 13 shots and committed three turnovers while Goretti took an 11-0 lead after the first quarter. Gray's driving layup 18 seconds into the second quarter gave Loyola its first points, yet Goretti held a seemingly comfortable 22-14 lead at halftime.
"I kept telling them `don't lose your confidence, don't lose your confidence,'" Loyola coach Gerry Savage said. "It's not too often we go 0-for-13, and we were getting some pretty good looks. But I figured we would bounce back. We just needed a little spark and we got it (in the third quarter)."
Logan led Goretti with 17 points. No other Goretti player made more than two baskets. Jamie Rice had a team-high 10 rebounds. John Thomas handed out four assists. Gray finished with 17 points for Loyola. Somarriba had 10, all in the second half.