The Light Blues forward is closing in on Roberts' penalty record.
Clyde forward Mark Roberts believes that Rangers striker Martyn Waghorn will beat his record for the most penalties scored in a single season during this campaign, but questioned whether the Scottish Championship leaders will be able to hold onto their leading goalscorer for much longer, the Daily Record reports.
Roberts set the current record of 15 penalties scored in one season during his time with Ayr, but Waghorn is bearing down on that total, with his spot-kick in the victory over Kilmarnock on Tuesday taking his tally to 11. And Roberts is convinced that the former Wigan man will soon be setting the new benchmark.
"I don't have any doubts Martyn will go on to beat my record," he told the Record.
"He's having a great season although he has missed a couple the same way I did.
Unsurprisingly, given the number of penalties that he has converted, Waghorn is well out in front in the Gers' goalscoring charts. He has 20 in the league this term, which leaves him 12 strikes clear of Kenny Miller. And while the striker is currently spearheading the club's promotion charge, Roberts admitted that his form may make it extremely difficult for Mark Warburton to keep him beyond this summer.
"He really looks the part. He's got a lot to his game apart from scoring a terrific amount of goals," he added.
"So I don't think he will be there much longer. Even if Rangers are back in the Premiership next season there are bound to be clubs in England interested in snapping up Waghorn."
While the form that Waghorn has shown at Ibrox may suggest that a team south of the border may try to bring him back to England, it could be argued that staying put is the best move for him.
At his previous clubs, the 26-year-old struggled to hold down a regular spot in the team. However, since his switch to Rangers, he has enjoyed being the focal point of the side. And with the club's stature, he is surely more likely to be lifting silverware if he ignores any potential interest that comes his way and sticks around to help take the club back towards the summit of the Scottish game.