Arena.
Charles band produced cheapie about a bloke on board a space station who sets out to become the first human champion of the arena in 50 years. Has Claudia Christian from Babylon 5. This one is a few years older than that series and B5 recycled the plot somewhat for an episode. In fact given the setting the whole thing feels like an extended B5 episode and I found myself wondering if J. Michael Strazinsky had seen this before creating the show. Arena also stars Armin Shimmerman who appeared in B5 knock-off Star trek deep space 9.
Arena is a classic example of Charles Band production... Cheap and cheerful and lots of fun.