The Pittsburgh Steelers have lost Pro Bowl guard Isaac Seumalo to the Arizona Cardinals, who signed him to a three-year, $31.5 million deal during the NFL's legal tampering period. Seumalo, a key player for the Steelers, will be difficult to replace as the team navigates offseason moves.

• 01Isaac Seumalo signed a three-year, $31.5 million deal with the Arizona Cardinals.
• 02Seumalo was a significant contributor to the Steelers, allowing only five sacks in three seasons.
• 03The Steelers may seek a replacement through free agency, the NFL Draft, or in-house options.
• 04Pittsburgh has been active this offseason, trading for wide receiver Michael Pittman and signing cornerback Jamel Dean.
• 05Seumalo's departure leaves a gap in the Steelers' offensive line.

The loss of Seumalo will require the Steelers to find a suitable replacement to maintain their offensive line strength, which could affect their performance in the upcoming season.