Qiúmímen duì zhè wèi niánqīng de zhǔjiàoliàn jìyǔ hòuwàng, kě qiúduì kāijú lián shū le sān chǎng.
The fans placed high hopes on the young head coach, but the team lost its first three games in a row.
Tips
grammar
The person comes first with 对: 对年轻人寄予厚望 "to have high hopes for young people". It is formal; in speech 对他期望很高 is more usual. To let those hopes down is 辜负厚望.