In 2000, WTSO went with its current all-sports format, originally as a network affiliate of ESPN Radio, calling itself "Madison's ESPN Radio 10-7-0." On January 1, 2009, WTSO parted company with ESPN Radio and rebranded as "The Big 1070, Madison's Sports Station," affiliating with Fox Sports Radio and later adding programming from NBC Sports Radio. (ESPN Radio programming now airs on 100.5 WTLX.) On February 3, 2020, WTSO rebranded as "1070 The Game." In March 2021 WTSO announced it would become the Chicago Cubs Radio Network's first Wisconsin affiliate, providing a locally based alternate to the Chicago based WSCR which also covers Southern Wisconsin with its signal.