POMONA >> The juggernaut Ganesha baseball team has rarely been challenged this season.

Friday was not going to be one of those challenges.

The top-seeded Giants broke the game open with a nine-run second inning and went on to rout Fontana 21-0 in a CIF-SS Division 7 quarterfinal at Garey High.

Ganesha (16-0), which has won 13 times this season by at least 10 runs, will play at Brentwood in the semifinals Tuesday, the team’s first semifinal appearance since 1984.

Friday was also Ganesha’s 11th shutout of the season.

“We’re just coming into our own now,” said Ganesha coach Tony Green, who had lost the first four quarterfinal games in his 10 years as coach. “We had a lot of kids in the sit-out period (as transfers). But things are really starting to click now, which is good.”

Ganesha has only a handful of returners from last year’s team that finished third in the Miramonte League and got at least 20 transfers into the program.

The Steelers (17-7) trailed 2-0 after an inning, but the game got out of hand in the second inning.

Twice Fontana had the infield in with a runner on third and twice the batter hit a routine grounder, but both times Ganesha beat the throw home. Later in the inning freshman Victor Garcia, who led the team with five RBIs, hit a three-run double and Gabriel Smith added a two-run triple in the inning.

Adrian Lopez led Ganesha with three hits, while scoring three and driving in three.

Ganesha was consistently aggressive on the base paths, stealing 16 bases, even in the sixth inning with the team ahead 20-0.

“We were just trying to keep the pressure on,” Green said. “We did that against South El Monte (in the playoff opener, an 8-4 win), took our foot off the gas, tried to slow it down. Then it was hard for us to get going again. I think with this group, we have to keep our foot on the gas. It’s not disrespectful. We’re just trying to keep that rhythm.”

“It’s baseball. I get it. I got nothing to say,” said Fontana coach Angel Santiago, who indicated that he would not steal bases if his team was ahead in a similar situation.

Ganesha used a quartet of pitchers: Jorge Solares (three innings), Brandon Gutierrez (two innings), Noah Alvarez (one inning) and Garcia (one inning) to combine on a one-hitter. Together they struck out 16 and walked three.

Oscar Martinez doubled with one out in the seventh for Fontana’s only hit, but Christian Bugarin, who had walked, was thrown out trying to score from first base.

“We’ve been going pitching by committee the whole season,” Green said. “This was actually our first game that we got out of a different rotation, but pretty close to the same guys.”

This was the first time Fontana has been in the playoffs during Santiago’s eight years as head coach.

“Playing a team like this shows them how much better they can become,” Santiago said. “They can reach that level as long as they work as hard as those guys. We’re 50% there. We don’t have that type of talent. But we’ll compete with anybody you put us on the field with.”