According to the North American Wrestling Rankings blog. which has been keeping TV stats since November 2006, Sheamus was the first wrestler to win 200 TV singles matches with his victory over Roman Reigns on the July 6, 2015 episode of RAW.
Sheamus was the 4th wrestler to win 100 singles matches back on August 3, 2012. As of July 8, 2015 – Randy Orton has 197 wins and John Cena has 188.
Sheamus tweeted about the milestone:
Wrestling News Blog 