I'm not really a stretch guru, but I just keep it simple. Butterfly, figure 4/hurdler's, feet together touch toes, scorpions, neck stretches, then the various arm stretches you learn in baseball (shoulder, triceps, forearms, wrists).
Instead of worrying about count or reps, just hold the stretch and relax. Pavel Tsatsouline calls it "relax into stretch," where you control muscular tension by relaxing and waiting it out. After that you stretch a bit further and repeat.