Opening batsman Dimuth Karunaratne was named the stand-in captain of the 17-player squad for the two-Test series, starting on February 13. Stumper Niroshan Dickwella will be Karunaratne's deputy.
Chandimal's axing came after the right-hander scored 5, 0, 15 and 4 in their recent 0-2 Test series defeat to Australia.
The Sri Lanka selectors wanted Chandimal to return to form by playing domestic cricket as they named three uncapped players in the squad against the Proteas.
Batsman Oshada Fernando, seam bowler Mohmed Shiraz and left-arm spinner Lasith Embuldeniya were the fresh faces in the squad while all-rounder Milinda Siriwardana has been recalled for the first time in nearly three years.
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The first Test will start from February 13 in Durban, followed by the second at Port Elizabeth from February 21.
Sri Lanka Test squad for South Africa. #SAvSL
— Sri Lanka Cricket (@OfficialSLC) February 5, 2019 " class="align-text-top noRightClick twitterSection" data="
Dimuth Karunaratne – Stand-in Captain
N Dickwella – V Capt
L Thirimanne
K Silva
K Mendis
K Perera
M Siriwardana
D De Silva
Oshada Fernando
Angelo Perera
S Lakmal
K Rajitha
V Fernando
C Karunaratne
M Shiraz
L Sandakan
L Embuldeniya pic.twitter.com/L5S8vSRJid
">Sri Lanka Test squad for South Africa. #SAvSL
— Sri Lanka Cricket (@OfficialSLC) February 5, 2019
Dimuth Karunaratne – Stand-in Captain
N Dickwella – V Capt
L Thirimanne
K Silva
K Mendis
K Perera
M Siriwardana
D De Silva
Oshada Fernando
Angelo Perera
S Lakmal
K Rajitha
V Fernando
C Karunaratne
M Shiraz
L Sandakan
L Embuldeniya pic.twitter.com/L5S8vSRJidSri Lanka Test squad for South Africa. #SAvSL
— Sri Lanka Cricket (@OfficialSLC) February 5, 2019
Dimuth Karunaratne – Stand-in Captain
N Dickwella – V Capt
L Thirimanne
K Silva
K Mendis
K Perera
M Siriwardana
D De Silva
Oshada Fernando
Angelo Perera
S Lakmal
K Rajitha
V Fernando
C Karunaratne
M Shiraz
L Sandakan
L Embuldeniya pic.twitter.com/L5S8vSRJid
Squad: Dimuth Karunaratne (Stand-in Captain), Niroshan Dickwella (VC), Lahiru Thirimanne, Kaushal Silva, Kusal Mendis, Kusal Perera, Milinda Siriwardana, Dhananjaya De Silva, Oshada Fernando, Angelo Perera, Suranga Lakmal, Kasun Rajitha, Vishwa Fernando, Chamika Karunaratne, Mohmed Shiraz, Lakshan Sandakan, Lasith Embuldeniya.