The Vikings opened C.J. Ham and Tyler Batty's 21-day practice window Wednesday, the team announced.

Ham and Batty started the season on Injured Reserve/Designated to Return due to respective knee injuries. The fullback and outside linebacker traveled with the Vikings for their back-to-back International Series games against the Steelers and Browns.

The Vikings departed Dublin Monday following their loss to Pittsburgh and arrived in London to prepare for a matchup with Cleveland. Kickoff is scheduled for 8:30 a.m. (CT) Sunday.

Vikings Head Coach Kevin O'Connell spoke with Twin Cities media members Tuesday morning. In addition to sharing Brian O'Neill had been diagnosed with an MCL sprain, he noted the update on Ham and Batty.

"Both of those guys should have their windows opened and start working their way toward [returning]," O'Connell said. "When their return would be, I don't know. It could be as early as this weekend. It could be at any point in time during that 21 days."

If Ham returns to game action this week, it will be his fourth time playing for the Vikings in London. The last time he played at Tottenham Hotspur Stadium, Ham scored a 2-yard rushing touchdown in Minnesota's 23-17 defeat of the Jets.

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