"We have some question marks, especially coming off the bench," Marrero said. "I'm a little concerned about that, but I like our pitching so far."
Leading the Spartans on the mound should be junior right-hander Oscar Sarabia. Sarabia went 3-4 last year, but Marrero thinks he is much improved for this season.
"He's a good pitcher," Marrero said of Sarabia. "I expect him to be much better than last year. He's not really a power pitcher, but he has four pitches and has control of them. So, it might be tough on the batters. He keeps them off balance."
The number two starter for the Spartans, Marrero said, should be junior righty Matthew Mayo.
"(Mayo's) got a very good fastball and he has a slurve and a slider," Marrero said. "He's a power pitcher. He throws hard."
Rounding out the starting rotation is expected to be right-hander Jacob Ramirez, who also plays shortstop. Marrero said Ramirez has a good fastball and better-than-average curveball.
While life on the mound looks bright for Schurr, Marrero said life in the batter's box isn't as rosy.
"Offensively, that's my second concern," he said. "We're not hitting the way I'd like to. That's a part of the game we're working on."
Marrero said he is looking for senior catcher Daniel Perez to lead the Spartans' offensive attack.
"He's our team captain," Marrero said of Perez. "He provides leadership for the team. He's not a power hitter. He's a doubles hitter. He'll drive it in the gap."
In fact, Marrero said the team itself is not a power hitting team. He added he's still looking for a leadoff hitter to "set the table because we're not scoring."
Marrero said this bunch he has to coach this season is inspiring him in the dugout.
"I'm very excited that the players are very hard working and are making it fun to coach," he said. "In practice, you work hard, so sometimes it's got to carry over to the game."