The Detroit Tigers are not currently playing their best baseball. In fact, some might argue that they are their own worst enemies. The top teams in Major League Baseball typically lose around 60 games or more in a season, so losing is inevitable. However, if the Tigers continue to beat themselves on the field, they cannot expect to achieve a positive outcome. In a losing effort Friday night on the road against the Kansas City Royals, Detroit's defense came back to bite them, allowing the Royals to walk off with the win. Now on a four-game skid , the Tigers have lost nine of their last 13 games , while having only been outscored by eight runs total in that 13-game stretch. Amid the struggles, Detroit has turned to one man in the middle of the lineup who continues to get the job done, yet at the same time seems to be flying under the radar: Riley Greene . Riley Greene's the Heartbeat of the Lineup Detroit Tigers left fielder Riley Greene (31) bats a double.…