Grigor Dimitrov bemoaned a lack of rest leading into the Australian Open after he lost to Roger Federer in the third round at Melbourne Park.
Dimitrov's campaign was ended by third seed Federer, who triumphed 6-4 3-6 6-1 6-4 on Friday.
The Bulgarian 27th seed's three matches at Melbourne Park came after he reached the final of the Sydney International last week, having made the Brisbane International quarter-finals prior to that.
Dimitrov's run in Sydney was particularly taxing after he was forced to play his quarter and semi-final on the same day prior to the decider, which he lost to Viktor Troicki.
Responding to questions about his elbow, which required medical treatment during the latter stages of the match against Federer, Dimitrov said: "It's just a little bit sore. I played a lot of matches. I didn't have much time to rest. Especially after Brisbane, I got to Sydney, I was playing matches pretty much every day since Tuesday or Wednesday.
"I flew straight after the final, then came here, played on Monday. Even though I had like a day off in between, it's just not enough obviously.
"It took a bit of time to adjust, to find the right tension on my racquet. There's just a lot of small components that were not in place.
"But I knew that I'm risking that a little bit. And I achieved what I wanted to in a way coming down to Australia. So I just need to keep my head up high right now and keep working and keep playing."
Despite his exit from the Australian Open, Dimitrov believes he is heading in the right direction as the former world number eight looks to return to the top 10.
Dimitrov has only lost three of his 10 matches this year, with two of those coming against 17-time grand slam champion Federer.
"I think slowly the pieces are coming together," he added. "But obviously when you lose matches against obviously the top guys, there's a lot you can see that you can still work on.
"It's a good feedback in the same time to sort of see where we at right now, what we need to work [on].
"Just don't get discouraged in the same time. It's not like I'm losing every match or anything like that. I thought I played good tennis at the beginning of the year, and that's important. Still a lot of tournaments to come ahead."