While having the ROH World Championship, ROH faced the issue of having another title with seemingly equal value, the ROH Pure Championship. Danielson and the ROH Pure Champion Nigel McGuinness had a match to unify the titles. They met at April 29 in a match fought under pure wrestling rules and McGuinness left Danielson outside the ring after a chair shot to win by countout—this was enough to retain the Pure title, but not to win Danielson's World Championship. They had another unification match in McGuinness's native England; ROH decided that there had to be a winner, with a title changing hands by countout and disqualification and a draw forcing a restart. Danielson won the match on August 12 and retired the Pure title as its last champion (the title would be reinstated in 2020). During a match with Colt Cabana on August 26, Danielson suffered a real injury when he separated his shoulder, tearing two tendons in it and he tore another tendon in his chest. Danielson returned at Glory by Honor V: Night 2 on September 16 and was challenged by Kenta, a guest competitor from NOAH, due to the two companies' talent exchange agreement—Danielson again retained his championship. At Final Battle on December 23, Danielson's fifteen-month title reign finally ended after he lost to Homicide at his 39th defense and he subsequently took time off from wrestling in order to heal his shoulder.