Colorado Rockies (16-57, fifth in the NL West) vs. Washington Nationals (30-43, fourth in the NL East) Washington; Wednesday, 6:45 p.m. EDT PITCHING PROBABLES: Rockies: German Marquez (2-8, 6.62 ERA, 1.66 WHIP, 48 strikeouts); Nationals: Mitchell Parker (4-7, 4.96 ERA, 1.34 WHIP, 50 strikeouts) BETMGM SPORTSBOOK LINE: Nationals -171, Rockies +142; over/under is 9 runs BOTTOM LINE: The Colorado Rockies will attempt to extend a three-game win streak with a victory against the Washington Nationals. Washington has gone 15-23 at home and 30-43 overall. The Nationals have hit 70 total home runs to rank ninth in the NL. Colorado has gone 9-30 on the road and 16-57 overall. The Rockies have hit 71 total