Note: The Penske Entertainment editorial staff is looking back at the 10 biggest moments of 2025 in the NTT INDYCAR SERIES in this year-end series, with one installment appearing on the site per day in countdown fashion from Dec. 22-31.

It’s called “Silly Season” for a reason, and sometimes those rumors of driver changes lead to something staggering.

The NTT INDYCAR SERIES had one of those paddock-shaking situations in 2025, first with the rumor that Will Power’s time at Team Penske might soon end and then with the news that the two-time series champion and 2018 Indianapolis 500 winner was joining Andretti Global.

For most of the season, Power’s employment status was the talk of the town. On Sept. 3, it was confirmed that the 44-year-old Australian will drive Andretti Global’s No. 26 Honda, replacing Colton Herta, who was moving to the parent company’s European racing program.

Three-plus months removed from Power’s switch, it almost doesn’t seem real. Power had joined Roger Penske’s organization in 2009 as a stand-in for Helio Castroneves during the Brazilian’s tax evasion case. Power opened that season by driving Castroneves’ No. 3 car in St. Petersburg, finishing sixth. Castroneves’ time away was short-lived, but Team Penske had been impressed with Power and entered him in the season’s second race, in Long Beach. Power responded by winning the pole and finishing second in the No. 12 car.

Power didn’t get to compete in every race after that, but he did enough in limited action that season, including a win from the pole in Edmonton, to earn a full-time seat in 2010. Since then, he has been a staple in the Verizon-sponsored car, winning 42 races to become the winningest Penske driver in history.

Power earned his final victory for Team Penske in August at Portland International Raceway, and it was clear then that he was out the door. That was confirmed on the day before Andretti Global announced Power as Herta’s replacement.

Power spent 17 seasons with Team Penske, winning at least one race in 16 of them. The only year he didn’t reach victory lane was 2023 when his wife, Liz, was seriously ill.

“It’s been the honor of my life to drive for Roger and the Penske organization,” Power said. “We have accomplished so much together, and I will always be grateful for my time with the team and my teammates who have supported me along the way. After much consideration, I felt like a change for me was the right move at this time.”

Power will officially begin his Andretti Global career Jan. 1. He will bring more than 20 years of INDYCAR SERIES experience to his new team along with series titles in 2014 and 2022. He has won 45 races and earned 71 poles, the latter a series record. He ranks fourth on the sport’s all-time wins list.

In more than 300 starts, Power has led over 5,000 laps and sits in fourth on both the all-time INDYCAR SERIES podium (108) and top-five finishes (142) lists. He started his career with Team Australia and KV Racing Technology before joining Team Penske.

Power will join confirmed teammates Kyle Kirkwood and Marcus Ericsson to complete the 2026 Andretti INDYCAR lineup. It’s something that still seems difficult to process.

“This is a whole new chapter for me,” Power said. “I have to say that sometimes a change of scenery and a fresh start is very energizing. I can’t wait.”