I looked at the data for the rest of the teams and sorted by average rank: Team___________________14__15__16__17__18____A New York Yankees________2___1___3___3___6____3.0 Kansas City Royals______7___6___1___4___2____4.0 San Francisco Giants____7__10___5___8___3____6.6 Miami Marlins___________3___7___6__28___9____10.6 Arizona Diamondbacks___19___4___7__14__10____10.8 Philadelphia Phillies__28___8__11___7___7____12.2 Los Angeles Angels_____12__NA__18__11__11____13.0 Minnesota Twins________18___9___9___2__28____13.2 Seattle Mariners_______11___3__13__16__25____13.6 Cleveland Indians______14__14__15__17__13____14.6 Oakland Athletics______19__18___7__19__13____15.2 Detroit Tigers_________10__27__14__23___4____15.6 Pittsburgh Pirates_____16__15__25___6__16____15.6 New York Mets__________24__13___4___9__28____15.6 Chicago Cubs___________27__12__20__13___8____16.0 Los Angeles Dodgers____13__25__16__10__19____16.6 Baltimore Orioles______19__11__18___5__30____16.6 Colorado Rockies_______30__17__12__23___5____17.4 Houston Astros__________9__21__27__20__12____17.8 Chicago White Sox______23__16__21__21__17____19.6 Cincinnati Reds________25___5__23__22__25____20.0 Tampa Bay Rays_________26__30__10__18__18____20.4 St. Louis Cardinals____29__20__22__12__20____20.6 Atlanta Braves__________4__22__29__25__24____20.8 Milwaukee Brewers_______6__18__24__27__31____21.2 Boston Red Sox_________15__26__26__26__15____21.6 San Diego Padres_______19__23__17__29__22____22.0 Washington Nationals____5__24__30__30__23____22.4 Texas Rangers__________17__29__28__14__27____23.0 Toronto Blue Jays______31__28__31__31__21____28.4 The Yankees, Royals, and Giants are consistently in the top 10 of all teams, while the Blue Jays are consistently really crappy at challenges. Several teams show a consistent range for 4 of the 5 years than a vastly different rank the 5th year (Braves, Nationals, Reds, Marlins). A few are very consistent, like the Indians who are consistently average (14/14/15/17/13) and maybe the Angels who are missing 2015 data (12/18/11/11) and the Red Sox who are consistently only 2 ranks (15/26/26/26/15). The Brewers are the only team with a consistent progression over time and are the worst mean rank in the NL Central. Its clear there's some talent to challenges. The harm to the brewers is that they often don't get a second challenge because the first was not overturned. May not make a huge deal, but could it account for as much as 1 win/loss?