Early in his career, Smyth was a commentator for Gaelic sports at Gaelic Park in The Bronx, New York, including Gaelic football and hurling matches for the local leagues from U-12 up to senior level. He, at least once, made a comical remark in regards to the poor level of play in a UEFA Champions League game, saying "I've seen better games played at Gaelic Park in Riverdale." Smyth was the voice of the MetroStars of Major League Soccer from the team's inception in 1996 to the early 2000s, when his ESPN contract prohibited him from working for the MSG Network. He currently commentates regularly for ESPN International covering matches weekly for La Liga, Serie A, the FA Cup, and International matches and is one of the regular panelist on ESPNSoccernet PressPass which is hosted by Derek Rae. He also commentates matches from the UEFAChampions League coverage on ESPN networks outside the United States. In 2007, he joined ESPN's MLS broadcast team and has also done a few World Cups for ESPN, including 2006, where he partnered with Adrian Healey. He commentates on the UEFA Highlight show on Thursdays and Fridays. Mr. Smyth will occasionally be a phone-in guest pundit mostly during the UEFA Champions League campaigns on the CSRNradio programme, The 2 G's, sharing his opinion regarding the upcoming matches. During ESPN's coverage of Euro 2008, Smyth shared commentary duties with Andy Gray, the two of them generally alternating matches. Smyth was an ESPN analyst for the 2010 World Cup, and has become an outspoken proponent of instant replay. Smyth became a part of Amazon Video's NFL Thursday Night Football UK broadcast team in 2017.
Radio Host
Currently, Tommy Smyth cohosts a show with Rodney Marsh called "Grumpy Pundits" on SiriusXM FC, Channel 157
Smyth was the 2008 Grand Marshal of the 247th St. Patrick's Day Parade in New York City. He has been the co-host for WNBC coverage of the New York City's St. Patrick's Day Parade since 1998.
Style
Smyth is known for signing off when commentating as "Tommy Smyth... with a Y," and for his description of a ball flying into the net when a goal is scored as "a bulge in the old onion bag". He also is known for saying "a peach of a goal."