L.A. South: Friday's top games

League championships are up for grabs across the region this week. Here are Friday night’s top games in south Los Angeles County:

No. 15 Chaminade at No. 25 Serra, Friday, 7 p.m. -- A couple of months ago Gardena Serra football coach Scott Altenberg appeared to be in the clear from yet another celebratory ice-water bath. That's no longer the case -- not that he really minds. The abilities of sophomore quarterback Jalen Greene have the Cavaliers (7-2, 4-0) thinking about the Mission League championship during a supposed down year. Chaminade (8-1, 4-0), which nearly upset Serra last year, hopes Terrell Newby and Logan Scott can finish the job this time around.

No. 23 Crespi vs. No. 17 Loyola at L.A. Valley College, Friday, 7 p.m. -- The Loyola Cubs (7-2, 2-1) don't have to win -- they're in the Pac-5 Division playoffs no matter what happens Friday. The same can't be said for Crespi (7-2, 1-2), which is coming off a bye week and, even more alarming, two straight losses. If the Celts lose again, they'd hope for a Notre Dame loss to league leader Alemany, which would set up a three-way tie for the third playoff spot between Crespi, N.D. and Bishop Amat. The Celts can avoid the mess with a win.

Orange Lutheran at No. 18 St. John Bosco, Friday, 7 p.m. -- Will the third time be the charm in Bellflower? The St. John Bosco Braves (6-3, 2-2) have lost two straight Trinity League games -- to Servite and Santa Margarita -- that would have earned them a playoff bid. Now, it’s quite simple: Win and they’re in. Orange Lutheran (6-3, 1-3) lost a game it wasn't supposed to lose last week against JSerra.

St. Bernard at Bishop Montgomery, Friday, 7 p.m. -- With a mere 121 passing yards Friday, quarterback Christian Smith of St. Bernard (9-0, 5-0) can reach the 3,000-yard mark. His single-game low this year is 155 yards (his next lowest output is 267), so Smith should have no problem. The senior ranks third in the state with 2,879 yards and is tied for fourth with 30 touchdown passes. Bishop Montgomery (6-3, 5-0) is surely aware of it, but it's one thing to know and another to stop. B.M. looks to defend its Del Rey League title.

Blair Angulo covers preps for ESPN Los Angeles. Follow him on Twitter.