This can't be good for one's mental toughness the night before a fight.

Ultimate Fighting Championship (UFC) Welterweight Jordan Mein will step into the Octagon later tonight (Sat., Aug. 23, 2014) having to deal with the arrest of his father, James Lee Mein, weighing on his mind.

The 47-year old was arrested Friday afternoon during the weigh-in ceremony for UFC Fight Night 49: "Henderson vs. dos Anjos" (read official results here) on one count of sexual battery. To check out full booking details and mug shot click here.

Beau Taylor, reporting for the Tulsa Voice, first broke the news on Twitter.com. Mein, who planned to corner his son against Mike Pyle later this evening at BOK Center, is reportedly already out on $2,000 bond.

Without question, this will serve as a major distraction for Mein, who stepped on short notice when Demian Maia was forced off the FOX Sports 1 card with an injury little more than two weeks ago. Mein (28-9) has won four of his last five fights, most recently notching a split decision win over Hermani Perpetuo at UFC on FOX 11 in April 2014.