Corona Finds New Ace in Junior Lefty Mason Sims

Sims strikes out 12 in six innings as Corona defeats King 3-0 in Big VIII League action.

Mar. 17, 2026 at 2:22am

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Junior left-hander Mason Sims has emerged as the new ace pitcher for Corona High School's baseball team, taking over the role from previous standouts Ethan Schiefelbein and Seth Hernandez. Sims struck out 12 batters with no walks in six innings as Corona defeated King 3-0 in a Big VIII League game.

Why it matters

Sims' dominant performance on the mound shows he is ready to lead Corona's pitching staff for the next two years after learning from the team's previous aces. This could be a sign of good things to come for the Panthers' baseball program.

The details

Sims struck out 12 batters and gave up just four hits in his six innings of work. Anakin Tolman recorded the save in the seventh inning. Sims had been waiting his turn behind Schiefelbein and Hernandez, who have both gone on to play minor league baseball, and is now poised to take over as Corona's top pitcher.

  • On Monday, March 16, 2026, Mason Sims pitched six innings for Corona in their 3-0 win over King.

The players

Mason Sims

A junior left-handed pitcher who has emerged as the new ace for the Corona High School baseball team.

Ethan Schiefelbein

A former ace pitcher for Corona who has gone on to play minor league baseball.

Seth Hernandez

Another former ace pitcher for Corona who has gone on to play minor league baseball.

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What they’re saying

“Sims has now assumed that role — and what a performance he turned in Monday during a Big VIII League game.”

— Eric Sondheimer, Author (latimes.com)

The takeaway

Mason Sims' dominant pitching performance shows he is ready to lead Corona's pitching staff for the next two years after learning from the team's previous standout pitchers. This could signal a bright future for the Panthers' baseball program.