NASCAR at Martinsville Odds, Pick: The 17-1 Prop To Bet for Sunday’s XFINITY 500by ActionNetworkOctober 29, 2021October 29, 2021Learn about a prop with 17-1 odds to bet for NASCAR XFINITY 500 at Martinsville Speedway on Sunday, Oct. 31, 2021. Leave a Reply Cancel replyYou must be logged in to post a comment.