Bryce Mitchell has his reservations about the upcoming UFC White House card, but is volunteering his services if needed.The Arkansas native was victorious at Saturday’s UFC Vegas 118 event, scoring a dramatic submission in the closing seconds of his bantamweight fight against Santiago Luna, and afterwards he spoke to reporters about next Sunday’s historic show set to take place at the White House in Washington, D.C.The conversation included a question about his thoughts on the Sean O’Malley vs. Aiemann Zahabi matchup and Mitchell made it clear that should one of the two be unable to compete, he is open to...