Weakie

Although the weakie has no chopping teeth comparable to those of a bluefish, he boasts a pair of extremely sharp canines in his upper jaw.

Source: wiktionary

That was as far as Macauley would go. He wanted to set his shoulders and bunch his fists and let the words fly at O' Neill: You can spot the stranger that comes on a visit and mark him down; you can swagger the streets at shearing-time and reap a harvest; but don't lump me in with the weakies and the yellow-bellies busting their cheques over a good time; the curs and the possums who get silly-drunk and fall in fear to your authority.

Source: wiktionary

And now we enter the real chess arena, where, haughty about ratings, everybody has only one thought in mind: to win — to pile up plaudits against the county grader's autumnal assessment. And to this end we all hope for a weaker opponent, but in the tournaments there are no outright weakies.

Source: wiktionary