The article presents results of an elicited-production study investigating syntactic and prosodic consequences of language contact on two varieties of multilingual Black speakers of South African English, namely Black South African English (BlSAfE) and a newly emerging variety by Black speakers (“crossing over variety”). The results indicate that contact varieties of South African English share syntactic traits of General South African English (GenSAfE) relating to focus marking. At the same time, BlSAfE also shows differences in the frequency of use of the syntactic structures. The differences cannot be accounted for solely by L1 influence. Also, in prosody, significant differences between the varieties emerge. For BlSAfE, the differences can be related to L1 influence. A language can exert its influence differently on different areas of another language’s grammar: With respect to syntax the “crossing over” variety groups with GenSAfE, with respect to prosody it is in-between GenSAfE and BlSAfE.