Disappointing again from Marcus in singles. 0/10 BPs is frustrating, but from above 9 of these were up to 1-1 in the final set, and then he lost 5 of the next 6 games to fairly decisively on scoreline lose that final set. I do hope that frustration didn't become too consuming.
Yes, be interesting to see them in Challengers, the beginning of the real testing ground in doubles, and hopefully Marcus has enough now to be more competitive in singles challengers than he has shown so far this year in futures.