Complex sentence: In 1995 Mathis retained his USBA belt with a points win over ex-contender Alex Garcia, thus setting up a big fight with the comebacking Mike Tyson, who would be having only his second fight since being released from prison earlier in the year.
Split into simpler sentences: In 1995 Mathis retained his USBA belt with a point win over contender Alex Garcia, thus setting up a fight with Mike Tyson. This was Tyson's second fight since being released from prison earlier in the year.