Baseball player flirting?? HELP

There's this guy on my brothers team and he keeps staring and smiling at me and sometimes I catch him looking at me. I somehow manage to run into him a lot and he talks to his friends about how big my muscles are. He like finds ways to touch me I guess you could say like play fight and stuff and tease me. Is he interested? If not then what is he?! HELP
Baseball player flirting?? HELP
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