Gonsalves is nation's best junior LHP

Cathedral Catholic (San Diego) junior Stephen Gonsalves is the nation's top left-handed pitcher in the Class of 2013. Brian Westerholt/Four Seam Images via AP Images

Each week from now until the end of April, we’ll take a look at the elite Class of 2013 baseball prospects by ranking the Top 5 players at each position. This week, we continue with the Top 5 left-handed pitchers, which is topped by Stephen Gonsalves of Cathedral Catholic (San Diego). The 6-foot-5, 190-pounder has started this year 2-0 with a 0.78 ERA and 29 strikeouts in 18 innings.

1. Stephen Gonsalves, Cathedral Catholic (San Diego)

Gonsalves, a University of San Diego, is up to 92 mph with his fastball and offers projection and a potential first-round profile. He uses his 6-foot-5 frame to create plane on the fastball and finishes his delivery with consistency.

2. Trey Ball, New Castle High School (Ind.)

Ball has big upside, sitting 88-92 mph and touching 93 with his fastball and offering a low-to-mid 80s slider and a changeup. He's 6-foot-6 and 180 pounds, but also possesses good athleticism. He runs well and brings a fluid delivery to the mound. Ball is committed to Texas, but has first-round abilities.

3. Dylan White, Sarasota High School (Fla.)

White, a Miami commit, is well built, standing 6-foot-4 and weighing 220 pounds. He sits in the 87-90 mph range with a four-seam fastball, but there may be quite a bit more velocity in the arm as he matures. and since he's not throwing 95 mph now, a firm low-90s reading could impact his draft stock significantly.

4. Evan Anderson, Dale High School (Okla.)

Anderson, who stands 6-foot-5, has four pitches, including a fastball in the upper-80s. He's grazed 90 on the radar gun and is also a power bat. He's most likely to be drafted as an arm, however, and the Ole Miss commit has a shot to pitch his way into an early selection.

5. Garrett Williams, Calvary Baptist (Shreveport, La.)

Williams has been pitching in the upper-80s with his fastball since he was 15 and is teasing the low-90s as a 17-year-old junior. He also offers a curveball and is known for working both sides of the plate. There's projection there -- he's 6-foot-3 and 190 pounds -- and he's built a strong reputation as a smart pitcher.

Others to Watch

Connor Jones, Johns Creek (Ga.)

John Kilichowski, Jesuit (Tampa, Fla.)

Scott Moss, DeLand (Fla.)

Jonah Wesely, Tracy (Calif.)

Jason A. Churchill covers scouting, player development and the MLB draft for ESPN Insider, as well as Prospect Insider, where he's the founder and executive editor. You can follow him on Twitter @ProspectInsider and email him at churchill@prospectinsider.com.