The Chicago City Series was played from 1903 until 1942, excluding the years one team or the other won the pennant, the Cubs and White Sox played each other in a best-of-seven postseason City Series. These series were officially sanctioned by the National Commission and later, the commissioner's office. 1985 saw the start of an annual "Windy City Classic" charity game. This lasted through 1995, with two games played in 1995. The Crosstown Cup trophy was introduced in 2010 and the White Sox won the trophy the first three seasons before the Cubs finally won it in 2013. In 2010, 2011, and 2012, the trophy was sponsored by oil and gas company BP and was known as the BP Crosstown Cup. From 2013 to 2018 there was no corporate sponsor. In 2019 the trophy was sponsored by the financial holding company Wintrust and was therefore called the Wintrust Crosstown Cup. In 2020, the teams faced each other as leaders of their divisions for the first time since 2008 in the Pandemic shortened season with the White Sox taking the three game series at Wrigley and the Cubs taking the three game series on the Southside. On August 8, 2021, MLB aired a game on ABC for the first time since 1995 with the game between the White Sox and Cubs at Wrigley Field with the White Sox winning the game 9-3.