At the 2014 World Championship Walsh missed five darts to extend his first round match against Jarkko Komula into a final set as he lost 3–1. He dropped to world number 31 after the event concluded and was defeated 9–5 by Mark Webster in the third round of the UK Open. Walsh failed to advance beyond the last 32 of any event after this. He fell to world number 41 ahead of the 2015 World Championship, outside of the top 32 who automatically qualify and could not claim a place via any other route to break a streak of 11 consecutive appearances in the event. 2015 also marked the first UK Open not to feature Walsh (he had played in each one since its inception in 2003) after he failed to win enough matches to qualify. He did qualify for four European Tour events with two first round and two second round exits adding a total of £5,000 to his ranking.