The Argentina star s form has been particularly impressive over the past six weeks, netting 13 times in 10 games for club and country, most recently hitting a hat-trick in Barca s 5-2 triumph over Real Mallorca.
But Ronaldinho, who spent the best part of four years as Messi s team-mate, is uneasy about suggestions the forward is the greatest to ever play the sport.
Speaking at a charity event in Mexico, Ronaldinho said: I m glad for Messi because he s a friend, aside from the fact he s been a leader of Barcelona.
I don t like comparisons because it s hard to identify who is the best in history. There s Diego Maradona, Pele, Ronaldo.
I can t say that Messi is the best ever, but he is the best in his time.
