Monster Energy/Yamalube/Star/Yamaha Racing was back this weekend, after having both of its Eastern Regional riders absent in Daytona. Fill-in rider, Thomas Ramette flew to California, from France, earlier in the week. He only got two days of riding in before St. Louis. Ramette qualified ninth, then finished fourth in the second heat race. In the main he got off to a seventh-place start and took a top-ten finish, despite having such little time on the bike.