comer

/ˈkʌmɚ/

ot noun

One who arrives. The champ will face all comers.
One in a race who is catching up to others and shows promise of winning.
One who is catching up in some contest and has a likelihood of victory.

Manbalar: Wiktionary (Free Dictionary API orqali), Datamuse, Tatoeba (CC BY 2.0 FR), MyMemory.