Not being a seed, not being in a seed position.(adjective)
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Use "unseeded" in a sentence
"Chasing Zimbabwe's 173 for seven off 20 overs, the 'unseeded' Australian team was restricted to 172 for seven, despite an attacking 72 run inning from opener David Warner and"
"The strong wind had a large impact on this tie and an excellent fightback by the 'unseeded'"
"The presence of seeds complicates the calculation, but only slightly: given that there are 32 seeds, each of whom faces a non-seed in the first round, and that Isner and Mahut are both unseeded, the probability is 64/96 x 1/95, which works out as 1 in 142.5."