Last year (13), the What Makes You Beautiful singer accepted a non-contract position on the team's reserve squad and was due to make his first appearance for the team in a match in September (13), but was forced to drop out due to injury.
However he finally made his debut with the team in a game against rivals Rotherham United at Doncaster's Keepmoat Stadium, much to the delight of the 5,333 fans who attended the game and the hundreds waiting outside the venue, who were mostly there to see Tomlinson on the field.
Fans of the teen heartthrob came from all across England, and he even drew international fans as well, from as far from Denmark, France, Italy and the U.S., according to Bbc.com.
However attendees had to wait until the 65th minute of the game to see the 22 year old make his turn as a soccer pro, and by the 89th minute, he fell on his bottom when attempting a pass. Unfortunately, the game came to a 0-0 draw, but it did not dampen his spirits following his soccer debut.
After the game, he took to Twitter.com and wrote, "Wow what an incredible experience . Can't put into words how I feel I will never forget pulling on my own Doncaster Rovers shirt !! Really can't thank the team, the gaffer and every single person involved at Doncaster Rovers enough! I feel like a 10 year old again!
"And obviously a huge huge thank you to everyone who came down. a real credit to our fans. hope it was a good day out!"
Proceeds from the game went to local Bluebell Wood Children's Hospice.