[1][2] He currently holds the record for highest number of goals scored in the Nigerian Premier Football League in a single season.
[5][6] After surprising many with his performances during his first NPFL season, Udoh earned a transfer to two-time African Champions League winners Enyimba for an undisclosed amount.
He would then score a trademark goal against Taraba Utd by capitalizing on lapse in communication between the defenders to give Enyimba a crucial away win.
He scored the only goal through a superb solo-run in a crucial away derby against Abia Warriors, to help Enyimba win the 2015 NPFL season with a game to spare.
[11] After electing to remain with Enyimba for the 2016 season, Mfon scored a brace in the second leg of the 2016 CAF Champions league qualifying game against Vipers FC.
In the final qualifying round, Udoh netted a hat-trick in the first leg against Etoile du Sahel for a convincing 3-0 win in Aba.
[13] With new coach Paul Aigbogun using a different tactical approach for the NPFL, Udoh was deployed as a right-winger (RW) in league games.
On 14 January 2020, USL Championship side FC Tulsa announced the signing of Mfon Udoh alongside Solomon Kwambe from Lobi Stars.
Udoh rejoined his hometown club Akwa United in December 2020 and marked his return with a goal in a 2–1 loss to Heartland in the 2020–21 season.