Marcus Armstrong wasn’t just testing on Monday—he was putting on a show. The Meyer Shank Racing (MSR) newcomer pulled double duty during the two-day IndyCar test at Sebring, stepping in for an ailing Felix Rosenqvist and seizing the moment in spectacular fashion.
After running the morning session in his No. 66 Honda, Armstrong took over Rosenqvist’s No. 60 for the afternoon and delivered a blistering 52.3675s lap, vaulting himself to the top of the timesheets. It was a dramatic end to a fast-paced session where the leaderboard shifted constantly in the final 20 minutes.
A Last-Minute Stunner
With Sebring’s sun dipping low, the intensity ramped up. Among those who challenged for the top spot:
✅ Conor Daly (Juncos Hollinger Racing) – 52.5931s, securing second place in a strong showing.
✅ Will Power (Team Penske) – 52.8032s, locking in third place for the afternoon.
Despite the late flurry of fast laps, no one could unseat Armstrong. His final run in Rosenqvist’s car put him comfortably ahead, making the most of his unexpected opportunity.
“To be fair, we didn’t do a lot of laps in the 60 car, but I’m happy to sub for Felix,” Armstrong said after his session.
Drama for Scott Dixon
While Armstrong was making headlines, six-time IndyCar champion Scott Dixon endured a frustrating afternoon. His session was cut short almost immediately due to what appeared to be an engine failure.
- Dixon logged just two laps before his car came to a halt.
- His Chip Ganassi Racing crew spent the remainder of the session performing an engine swap.
The setback meant Dixon missed valuable track time, but he will be back on Tuesday morning when his group returns for the final day of testing.
What’s Next?
Tuesday’s test schedule flips the groups, with:
- Dixon and the afternoon runners taking the track in the morning session.
- Armstrong and the morning group closing out the test in the afternoon session.
For Armstrong, the biggest takeaway is clear—his speed is real. Whether in his own No. 66 Honda or filling in for Rosenqvist’s No. 60, the New Zealander delivered under pressure. If Monday’s test is any indication, he’s ready to make waves in 2025.