Welcome to The Walk Off, the nightly MLB recap from Big League Stew. Here we'll look at the top performers of the night, show you a must-see highlight and rundown the scoreboard. First, we start with a game you need to know about. Everyone knew the Chicago Cubs were going to be very good this season. That's why way more pundits than usual were in agreement when predicting a World Series champion, with 44-percent actually picking the Cubs to win it all. That's also why Las Vegas continues making the Cubs the odds on favorite to end their historic championship drought. As we've learned over the years, sometimes expectations don't match results. But in the case of the Cubs, the results are somehow surpassing the expectations. On Wednesday, they became the first team in MLB to reach 20 wins when they defeated the Pirates 6-2 . The victory also completed a three-game sweep at PNC Park and ran their division lead to a league-best six games [ Join a Yahoo Daily Fantasy Baseball contest now ] The Cubs are not fooling around. Even with slugger Kyle Schwarber lost for the season. Even with Jason Heyward banged up and off to a slow start. Even with 16 of their first 26 games away from...