Here is a scouting report I found on Livan either 2002 or 2003
According to Expos pitching coach Randy St. Claire, Livan Hernandez throws four pitches, or five if you count both of the fastballs he throws: "Fastball, curveball, slider, change-up. And he throws both fastballs, two-seamer and four-seamer. He throws the two-seam fastball in the 87 to 89 (mph) range, and the four-seamer 88 to 91, or 92 at times. Basically, he pitches in the upper eighties."