Osh1001, my high GPA 2022 LHP son was in the same boat a year ago. Most of the "rules of thumb" regarding velocity are geared toward RHPs, with vague caveats for LHPs. Everyone says you should be realistic about the schools you target, but how do you get a realistic assessment of your son's prospects? PM me if you'd like. I'd be happy to share my son's experience speaking with high academic schools.