Growth, as St. Louis Cardinals’ manager Oliver Marmol pointed out repeatedly over the final month of the 2026 season, can be measured in a variety of ways.

After opting to keep Riley O'Brien at the trade deadline despite interest, will the St. Louis Cardinals possibly move the star closer?

The Twins need bullpen help for 2027. Riley O'Brien and Sam Hentges offer two trade paths, with different acquisition costs, contract terms and risks.

The Cardinals got a strong year from Riley O'Brien in 2026, and they must avoid making a mistake with him.

Riley O’Brien finished the 2026 season with 38 saves, tying Mason Miller for the National League lead while emerging as a key part of the Cardinals’ bullpen.

For the fourth straight season, the St. Louis Cardinals will not make the playoffs. For the third time in those four seasons, they will have a losing record. While the team has made major progress this season, it is still disappointing given the organization's rich tradition of winning. As a result, it's easy for members …

Riley O'Brien has struggled, but Oli Marmol isn't going to give up on him.

The St. Louis Cardinals still may have something special in Riley O'Brien. It may be too soon to throw in the towel on him.

The Cardinals' closer has gone from a breakout star to a concerning bullpen option.