The Finn will however, have his work cut to hang onto top spot this weekend, as all of the PWRC runners - except one - have nominated the Acropolis to score points on. There are also two 'guest' entries, boosting the total number of drivers' in the category to 29.
Ketomaa is still aiming high though and despite his inexperience wants a top-four finish: "The rally will be interesting for sure. The conditions are new for me, compared to rallies like those of Finland and Sweden. I am looking forward to the event," he noted.
"I would like to be in the top four, but let's see first what the speed will be, how we can get on and how the car handles, because obviously the roads are rougher compared to what I'm used to. This stage was good but we have to be careful not to break the car."
Andreas Aigner won last time out, taking his maiden win in the PWRC and he lies joint second in the PWRC drivers' championship, 4 points further back, just like Juho Hanninen, who won the first round.
"We are coming to Greece with loads of confidence. I can't wait for the rally, last year's result [when I finished second] is giving me all the extra motivation I need," noted Aigner.
"The forthcoming pair of races, starting in Greece and then in Turkey are of absolutely huge importance to me. I want to pick up some important points for the team in both places."
"The rally is slow, quite rough, but I like it," added Hanninen. "There are a lot of fast drivers and the competition is getting higher and higher. Now, there are fast new guys, such as Ketomaa. My target is to finish in the top-three."
Other contenders meanwhile include two-time PWRC champion, Toshi Arai, as well as 2006 PWRC champion Nassar Al-Attiyah.
Arai is keeping his hopes in check though as he is still adjusting to the new Impreza: "I had many problems in Argentina, so I need to check a lot of things here," he confirmed. "I need the data, and I want to finish. It's a new car for us."
Other regulars such as Fumoio Natahara, Armindo Araujo, Mirco Baldacci and Spyros Pavlides should also figure.
"The Greek rally is very difficult," continued Nutahara. "The surface is hard and there are many rocks. But for me it is good to be here, I'm very happy. I want to have a good result."