Cape Town - Highveld Lions and Proteas wicketkeeper Quinton de Kock has apologised for his behaviour after he apparently shoved a Cape Cobras player in their four-day Sunfoil Series match at Newlands over the weekend.De Kock, 20, could be suspended for two matches after he apparently shoved the Cobras' Allister Gray during an altercation.The drama at Newlands unfolded on Saturday after the umpires accused the Cobras of ball-tampering. The Lions were - as the rules state - allowed to pick a new ball. However, the two batsmen at the crease, Temba Bavuma and De Kock, picked an old worn-out ball which heavily upset the home side. De Kock then apparently bumped into Gray and threatened to hit him with his bat.De Kock took to Twitter on Tuesday to apologise for his behaviour."Hay everyone I'm sure you have all heard the latest news...and i just wanna say i am sorry for everything and I'm sorry to embarrass my team," he tweeted."I will make up and do everything i can to make things better."Cricket South Africa is yet to determine a date for his hearing, although spokesperson, Michael Owen Smith, said it should be completed this week. Should De Kock be found guilty, his participation for South Africa' upcoming ODI series will be in doubt.Should he be banned he will miss the Proteas' first two ODI games, with the series ending in Potchefstrooom on January 25.Proteas' ODI squad for NZ series:AB de Villiers (Titans, captain), Hashim Amla (Dolphins), Farhaan Behardien (Titans), Quinton de Kock (Highveld Lions), Faf du Plessis (Titans), Colin Ingram (Warriors), Rory Kleinveldt (Cape Cobras), Ryan McLaren (Knights), Morne Morkel (Titans), Robin Peterson (Cape Cobras), Aaron Phangiso (Highveld Lions), Graeme Smith (Cape Cobras), Dale Steyn (Cape Cobras), Lonwabo Tsotsobe (Dolphins).