Ricardo 'Tuca' Ferretti, right, has proven to be very effective at his Tigres post. With another week of the Liga MX Apertura 2015 season in the books, there are important lessons to be learned. Here are five of the main ones: 1. "Tuca" deserves his shot Yes, Ricardo Ferretti is an emotional coach. So those hoping for occasional outbursts are not likely to be disappointed by the veteran as he begins his stint as Mexico national team coach.