He hit another batter in his first appearance with BAL. Now 25 HBP in 132 career IP.
I thought this was insanely high. I did some research at BB-Ref and...yeah, it's insanely high.
I looked at every pitcher in the top 1000 for career hit batsmen (the cutoff is 34 career HBP). I found only four pitchers with a ratio of HBP to IP higher than 0.1 (i.e. one hit batsman every 10 IP), and three of them pitched mostly or entirely before 1900. They are:
Ed Doheny, 141 career hit batsmen in 1405 IP
Danny Friend, 60 career hit batsment in 551.2 IP
Randy Choate, 45 career hit batsmen in 408 IP
Gus Shallix, 39 career hit batsmen in 291 IP
Anyway, Yohan Ramirez is off the charts even compared to these pitchers, with a HBP rate approaching 2 every 10 IP. I conjecture that this is the highest ratio of all time for any pitcher above (say) 100 career IP, but would need more research to verify this.