I am an infielder on my city league slow-pitch softball team.  Nothing glorious about that, but boy is it fun.  Unless you take a shot off the infield dirt/gravel into the crotch.  Not fun.  That is why I trust my Shock Doctor Men's Ultra Supporter with the carbon flex cup.

I do not understand the reviews about the uncomfortable jock strap.  That's just not the case.  It is a solid jock strap and comfortable to wear.  Although I wear mine over boxer briefs (it's more comfortable and the protection is not affected).

I will note however that the cup is a bit small.  It is worthwhile to go ahead and purchase a larger cup if you need it or like to wear your jock strap over briefs/boxers.