Boxing’s fully unified 140-pound champion appears to be done with the division within which he holds the IBF, WBA, WBC and WBO titles.

Josh Taylor told Sky Sports following his disputable, split-decision victory over Jack Catterall on Saturday night that he’ll likely move up in weight for his next fight. The thought of making one mandatory defense after another doesn’t especially appeal to Taylor, who also considers former unified lightweight champ Teofimo Lopez a potential opponent if he were to remain at the 140-pound limit.

Taylor, 31, stands 5-foot-10, but he hired a top nutritionist for each of his last two fights and made 140 pounds reasonably comfortably. As he gets older, however, the Scottish southpaw has noticed it has become more difficult to shed those last couple pounds.

“To be honest, I made the weight pretty well,” Taylor said. “I made the weight good, but it is getting harder to make that weight, you know? It is getting harder. That, most likely, will be my last fight at 140. But we’ll sit down with my team. And I left out a little bit late as well to start the preparations for making the weight cut that fight, with injuries and stuff. You know, so we left a little bit of taking the weight off because I couldn’t get the weight off in the time with the times with my conditioning and things like that, with my knee injury and stuff.”

Taylor-Catterall was postponed two-plus months, from December 18 to Saturday night at The OVO Hydrow in Glasgow, because Taylor suffered from bursitis and small tissue tears in his right knee.

“I left a little bit late to get the weight off,” Taylor said in reference to the rest and physical therapy he needed for his knee to heal. “But I still made the weight and I still performed. But it showed a little bit in my performance. But we’ll sit down with my team. But most likely, that’ll probably be my last performance at 140.”

Prestponpans’ Taylor (19-0, 13 KOs) got off to a late start Saturday night as well. He had difficulty dealing with his fellow southpaw, as Catterall (26-1, 13 KOs) proved to be sharp, skillful and elusive.

England’s Catterall dropped Taylor with a left hand early in the eighth round, but Taylor got up quickly and survived that round. Catterall faded at times in the final few rounds, yet CompuBox counted 47 more punches landed for him (120-of-525 to 73-of-306). CompuBox credited Catterall for connecting on more power punches (81-of-267 to 57-of-179) and more jabs (39-of-258 to 16-of-127).

Two judges – England’s Ian John-Lewis (114-111) and Scotland’s Victor Loughlin (113-112) – still scored their 12-round fight for Taylor. One judge, England’s Howard Foster, scored Catterall a 113-112 winner.

In addition to the point Taylor lost for the aforementioned knockdown, referee Marcus McDonnell deducted a point apiece from Catterall for holding during the 10th round and Taylor for lightly hitting Catterall in his midsection after the bell sounded to end the 11th round.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.