The elegant righthander has played 16 ODIs for SA, the last of which was against Australia in Hobart on November 11. He scored 32 off 42 balls in a match where both David Miller and Faf du Plessis scored hundreds.
The Proteas have since played eight ODIs (five against Pakistan and three against Sri Lanka) and Markram has not featured.
It appeared he was out of favour for selection to the World Cup squad despite calls from the cricketing community to give him a crack in the series against Pakistan and Sri Lanka.
But an avalanche of Momentum One-Day Cup runs, where he scored 169, 139 and 85 in consecutive innings for the Titans, has finally seen him kick the door down.
He will now be wanting to force his way into the 15-man World Cup squad by capitalising at St George’s and Newlands.
Markram said he had initially accepted being dropped from the squad and had opted to make a difference in domestic cricket with the Titans.
“I was obviously left out of the squad, and rightly so. The numbers just weren’t good enough,” Markram told a media conference at St George’s on Tuesday. “Since then it’s been a case of trying to take selection out of my mind. I’ve been with the Titans for a couple of weeks now and I was really just trying to invest all my energy and efforts into that team.
“I’m going to come here with the exact same mindset. I’m going to try and be full of energy and full of positive vibes for the side and we’ll see what happens.”
The 24-year-old said he will do all he can to convince the selectors to pick him for the global showpiece in England and Wales starting at the end of May.
“I’ll fight tooth and nail to try and get into that squad, so by no means am I just floating about and hoping to get in. I’m trying my best. But I think things have been put into perspective and whether it happens or not it sits easy with me. I just want the Proteas side to go there and really win the World Cup for the country.”
SA bring an unassailable 3-0 lead to St George’s as well as one other change in personnel in recalled all-rounder JP Duminy.
Though there has apparently been no talk of a whitewash within the camp, Markram says there will be no relenting.