While wicket-keeper-batsman Klaasen recently notched 69 runs from 30 balls in South Africa's six-wicket win over India in the 2nd T20I, 20-year-old Mulder has played a single ODI against Bangladesh at East London in October 2017.
The third and final Test between South Africa and India will resume as per schedule on Day 4 despite the controversy-filled third day when play was stopped early because of a dangerous pitch at the Wanderers in Johannesburg on Friday.
South Africa have included the world's number one test bowler Vernon Philander in their preliminary 30-man squad for the World Twenty20 tournament to be played in Bangladesh in March and April next year.
South Africa captain Faf Du Plessis admitted that it is normal to get distracted by the weekend's Indian Premier League auctions as the cash-rich T20 event 'plays a big part in their lives'.
IMAGES from Day 1 of the second Test between South Africa and India, in Johannesburg, on Monday.
India's formidably consistent match-winners have a date with history in the New Year when they take on an out-of-sorts South Africa in the second Test in Johannesburg from Monday in pursuit of a coveted first-ever series win in the Rainbow Nation.
Part-time spinner Dean Elgar ripped through India's batting line-up with four wickets as South Africa made the hosts rue their decision to bat first on the opening day of the first Test in Mohali, on Thursday.
IMAGES from Day 1 of the 1st Test played between South Africa and India at Centurion on Sunday.
Opener Dean Elgar struck his third Test century as South Africa rode their luck to finish the first day of the second Test against West Indies on 270 for two on Friday.
Replying to India's 497-9 declared, South Africa were all out for 162
The unbeaten Mumbai duo added 185 runs for the fourth wicket to rescue the hosts who looked in dire straits at 39 for three in the morning session after opting to bat in Ranchi.
An ICC source said that Cricket South Africa hasn't yet reached a situation that demands the apex body's intervention.
Hardik Pandya stood tall amid ruins with his all-round prowess but hosts South Africa were still very much in command with a current lead of 142 runs against India after an enthralling second day in the first Test in Cape Town
South Africa trail by 439 runs and will need to bat for much of the weekend to stay in the contest and avoid going 2-1 behind in the four-Test series.
Dean Elgar and Hashim Amla had given South Africa a slender lead over New Zealand at the end of the third day of the first Test on Friday, which was disrupted for 30 minutes by a fire alarm at University Oval.
Images from Sunday, Day 4 of the second Test between India and South Africa, in Pune.
South Africa paceman Kagiso Rabada bagged another five-wicket haul to take his Test match tally past 100 as his side wrapped up a comprehensive innings and 254-run victory over Bangladesh in Bloemfontein on Sunday.
South African captain Graeme Smith is reportedly unhappy with Cricket South Africa's (CSA) announcement of player contracts as it has been difficult for some of the players to handle.
Cheteshwar Pujara's unbeaten 63 gave India a firm hold on the opening Test against South Africa after off-spinner Ravichandran Ashwin picked up his 13th five-wicket haul to restrict the touring side to 184 on the second day on Friday.
South Africa skipper Faf du Plessis silenced the boos of the Adelaide crowd with a defiant century before declaring on 259 for nine and giving his bowlers a crack at Australia in the final hour of the opening day of the day-night third Test on Thursday.
Spin legend Shane Warne has thanked star batter Virat Kohli for "passionately supporting" Test cricket, a day after he stepped down as skipper of the Indian Test team.
A dominant India quickly wrapped up the last two wickets to win by a comprehensive margin of an innings and 202 runs and complete an emphatic 3-0 series whitewash against South Africa.
Dom Bess took three more South African wickets, and grabbed his first test five wicket haul, to increase England's stranglehold
Rohit, who now has five centuries from 28 Tests, gained a whopping 36 slots after his knocks of 176 and 127 in the first Test against South Africa in Visakhapatnam
Vernon Philander took two wickets in as many balls to leave Pakistan on 17 for two wickets at the end of the first day of the third Test after they had rallied earlier on Friday and bowled hosts South Africa out for 262.
Chasing an improbable target of 490 to level the series, the tourists finished day three on 139-5, their highest total in the spin-dominated series, at Colombo's Sinhalese Sports Club Ground.
Dean Elgar says it was not worth the risk and the third and final Test against India should have been called off on the third day itself.
The much-vaunted Indian top order struggled yet again against quality fast bowling as the visitors stared at a series defeat at the close of fourth day in the second cricket Test against South Africa in Pretoria, on Tuesday.
AB de Villiers has been ruled out of South Africa's two-test home series against New Zealand this month with an injured elbow and Faf du Plessis will take over the captaincy.
South Africa have retained the same 15-man squad that saved the series with Pakistan in October for their two home Tests against India later this month.
There was not much luck for the South African bowlers as they toiled tirelessly on a hot and humid day unable to convert their half-chances.
South Africa's Anrich Nortje took the vital wickets of captain Joe Root and talisman Ben Stokes as England struggled to 262 for nine at stumps on the first day of the second Test on Friday. Pace bowler Nortje, playing his fourth Test, finished with 2-54 off 17 overs as the home side restricted the tourists on a Newlands wicket that was expected to be full of runs. Images from the opening day of the second Test at Newlands on Friday.
South Africa bowled England out for 181 in their first innings and had built up a significant 175-run lead by the close of play on the second day of the first Test at Centurion Park on Friday. Images from Day 2 of the first Test between South Africa and England at Supersport Park in Centurion on Friday.
Usman Khawaja hit Australia's first century of the series and Peter Handscomb scored a half-century on debut as the hosts reached 307 for six with a lead of 48 at end of the second day of the day-night third Test against South Africa in Adelaide.
Australia ripped through South Africa's top order in the first hour, dismissed the tourists for 242 by tea and reached 105 without loss at close on the back of some Dave Warner fireworks on the opening day of the first Test on Thursday.
Dean Elgar criticises Mohali pitch, says it's is a bad wicket.
South Africa opener Dean Elgar reckons that the toss will play an important role in tougher Indian conditions during the four-Test series and said they will look to put the Indian new ball bowlers under pressure early on.
Hashim Amla struck an unbeaten half-century as South Africa brushed aside some early alarms to record a six wicket victory over Pakistan on day three of the first Test at Centurion Park on Friday.
Dale Steyn become South Africa's leading wicket-taker in Test cricket
Kohli, who also led India to the top of the world's Test rankings during the period, received the Sir Garfield Sobers Trophy, which team mate Ravichandran Ashwin had won last year.