Boxing champ Serrano returns to MMA with PFL deal

Amanda Serrano, undisputed featherweight boxing champion, signed with PFL's Super Fight division.
Serrano is ranked No. 3 pound-for-pound boxer in the world, with 44-2-1 record and 30 knockouts.
She has 2-0-1 record in previous MMA fights, including submission wins.
Serrano wants to fight MMA again before retiring.
PFL's commitment to women's MMA influenced Serrano's decision.