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17a Bird released in US sports event? Excellent 6 ?u?e??
18d Graduate books a long time seeing historic scientist
7 ????a?e
22d Island shared between Argentina and Uruguay 5 ??u??
7d Fat? One's the ultimate in disgrace in matching clothes
4 s?e?
Thanks for helping

17 Superb, excellent. Superbowl was the US event, remove the bird/owl.

22 Nauru, an island. It's ArgentiNA+URUguay.

18d) Babbage

https://en.wikipedia.org/wiki/Charles_Babbage

suet? fat = suet/suit

Found this:

Fat /
SUET = SUIT (matching clothes) changing I (one) to E (last letter of disgrace)