Former KHOU 11 Sports Director Bob Allen has passed away after a courageous battle with cancer.

Many Houstonians grew up watching Allen over the last 40-plus years during his time at both KHOU and KTRK.

Here's the reaction from the sports world to the news of his passing:

From his colleagues:

May he rest in peace. #RIP pic.twitter.com/vvrdsFfPpV

— Houston Texans (@HoustonTexans) October 20, 2016

R.I.P Legend 🙏 pic.twitter.com/xKhMDMu8zi

— Texans Cheerleaders (@TexansCheer) October 20, 2016

The Dynamo and Dash are thankful to have known Bob Allen and he will be greatly missed. pic.twitter.com/pwaEdAOkum

— Houston Dynamo (@HoustonDynamo) October 20, 2016