West Midlands Police are investigating an attack on a 21-year-old man just after 2pm on Sunday (9 February) in West Heath.
The man suffered slash wounds to his leg and was punched at an address on Sibdon Grove.
An 18-year-old man was arrested on suspicion of wounding and has been bailed with conditions.
Enquiries continue and anyone with information can contact us via Live Chat at west-midlands.police.uk between 8am and midnight, or call 101 anytime. Alternatively contact Crimestoppers anonymously on 0800 555 111. Please quote crime reference 20BW/36595Z/20.