Wednesday night was special for the Chicago Cubs.
The day after the Houston Astros and ace Dallas Keuchel shut out the Yankees 3-0, Cubs ace Jake Arrieta shutout the Pirates 4-0 to end Pittsburgh's season.
Both these wild-card victories highlighted the rise of underdogs and added more teams to the playoff field who haven't been there in a while.
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The Cubs, of course, have their infamous streak and the Astros were a team that were for long a joke of the NL Central.
They join underdog teams like the Mets and Blue Jays who have proven their worth this season and have shown they have what it takes.
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With the Cubs playing the second and final one game playoff Wild Card game, the MLB postseason field is officially set with the ALDS beginning on October 8th and the NLDS following on October 9th.
American League Division Series
The American League Division Series starts in Toronto for the Blue Jays vs. Rangers series and in Kansas City for the Royals vs. Astros series.
Game one of the ALDS between the Astros and Royals pits Colin McHugh, who had a 19-7 record, against the Royals' Yordano Ventura, who owns a 13-8 record.
Scott Kazmir starts game two for the Astros with his 7-11 record, and Johnny Cueto for the Royals with an 11-13 record.
At the moment, both starters for game three have not been announced.
Over in Toronto, Yovani Gallardo, at 13-11, will be matched up against David Price, who sits at 18-5 currently.
New Ranger Cole Hamels, and his 13-8 record take the mound for game two while young Blue Jays pitcher Marcus Stroman puts his undefeated record of 4-0 to the test.
While the Blue Jays have announced Marco Estrada and R.A. Dickey for games three and four respectively, the Rangers have not made any indication of their pitchers for games three and four.
National League Division Series
The National League Division Series begins in St. Louis and Los Angeles this year as the Cubs and Mets travel to play in their first NLDS games in quite a few years.
With the Cubs just clinching their NLDS berth, no pitcher announcements have been made, and for the Cardinals, 13-10 John Lackey has been given the game one nod.
In Los Angeles, the Mets send two young phenoms to the mound for their first two games, with Jacob deGrom starting game one with his 14-8 record. Game two will see Noah Syndergaard and his 9-7 record take to the mound.
The Mets will face the reigning NL Cy Young winner Clayton Kershaw and his 16-7 record, and then go on to face the equally impressive Zack Greinke with his 19-3 record.
For the Cubs and the Mets, it will be a true test as the Cubs face the best team in baseball and the Mets start their series against arguably the two best pitchers in baseball.