彼の前途は洋々たるものだ。

tbd

A great future is reserved for him.

彼には洋々たる前途があった。

tbd

A brilliant future lay before him.

この若さで国際大会で優勝するなんて、まさに前途洋洋ですね。

tbd

His victory at this age in an international competition is a good indication of a bright future.