Masilela has found himself having to watch on from the bench with Khumalo playing ahead of him – the first time that the 31-year-old's starting place has come under real threat since his arrival from Maccabi Haifa in 2012.
Khumalo has started all of the last four games that Chiefs have won, putting in a solid shift through all those encounter to leave Masilela to wait on the side-lines.
"It is competition and competition has always been there," says Masilela.
"It is not only Sbu that I have had to compete with; I have always competed with the other guys and the important thing is that the team is winning games now and they are performing, and you give support to whoever is playing while waiting for your chance. This is football.
"It is not strange [to be sitting on the bench] because, even last season, there was some games that I missed, I was on the bench and Keagan [Ritchie] played.
"Even with Stuart [Baxter], I would sit on the bench and Keagan or Simphiwe Mtsweni would play, so it is nothing strange and the positive is that the team is winning and getting results."
The former Getafe full-back maintains that the team and club comes ahead of his personal joy, and says he will continue working hard in training to prove his worth.
"The team comes first; Kaizer Chiefs comes first. If Kaizer Chiefs is winning and the fans are happy that is important," he added.
"Whoever is not playing must wait for their chance and keep on working hard at training. That's it."
Khumalo was brought in during the off-season break from SuperSport United, as part of a swap deal that saw Ritchie moving in the opposite direction.
Amakhosi are currently top of the Absa Prmiership standings, ahead of Golden Arrows on goal difference, with 13 points from six games thus far.