One of Atlanta’s best relief pitchers this season? Luke Williams. OK, that’s not exactly true. But Williams was one of the (tongue-in-cheek) bright spots for Atlanta relief pitching Sunday in a 10-1 loss to Colorado. The circumstance that forced Williams, a backup infielder, onto in the mound in the Braves’ worst loss of the year was not one to evoke pride, to be sure. Williams, nonetheless, did his job. Explore Loss to Rockies leaves Braves treading water in playoff hunt “Snit (Braves manager Brian Snitker) came up and asked me if I could do it and I said yeah,” Williams said Tuesday before Atlanta opened a three-game series against the Mets — during which the Braves hope to NOT have to use