A former Sri Lanka under-19s player,[1] Jayaratne made his senior debut for the Colts Cricket Club in January 2009, in the Premier Limited Overs Tournament.[2] In January 2010, he represented the Sri Lankan under-21s in the cricket tournament at the 2010 South Asian Games, winning a silver medal.[3] Jayaratne made his first-class debut in February 2011, in the Premier Trophy.[4] During the 2012–13 season, he took 23 wickets from seven matches, behind only Sajeewa Weerakoon for Colts,[5] which included figures of 5/53 against Saracens and 7/37 against Lankan.[4] Jayaratne was subsequently selected to make his debut for Sri Lanka A in the 2013 off-season, touring the West Indies and playing home series against New Zealand A and Kenya.[2] At Twenty20 level, he has made appearances for Ruhuna, Southern Express (including in the 2014 Champions League Twenty20), and the Kurunegala Warriors.[6]
In March 2018, he was named in Dambulla's squad for the 2017–18 Super Four Provincial Tournament.[7][8] In March 2019, he was named in Dambulla's squad for the 2019 Super Provincial One Day Tournament.[9] In October 2020, he was drafted by the Kandy Tuskers for the inaugural edition of the Lanka Premier League.[10]
In June 2021, Jayaratne was named in Sri Lanka's squad for their tour of England.[11][12] In July 2021, he was named in Sri Lanka's squad for their series against India.[13] The following month, he was named in the SLC Greens team for the 2021 SLC Invitational T20 League tournament.[14] In November 2021, he was selected to play for the Kandy Warriors following the players' draft for the 2021 Lanka Premier League.[15] In July 2022, he was signed by the Colombo Stars for the third edition of the Lanka Premier League.[16]
