Carenso and then by Jean-Marie Leblanc, who in 1989 had been race director. The former television presenter Christian Prudhomme—he commentated on the Tour among other events—replaced Leblanc in 2007, having been assistant director for three years. In 1993 ownership of L'Équipe moved to the Amaury Group, which formed Amaury Sport Organisation (ASO) to oversee its sports operations, although the Tour itself is operated by its subsidiary the Société du Tour de France. 1988 onward was arguably the beginning of what can be referred to as the doping era, as a new drug which drug tests were not able to detect began being used known as erythropoietin (EPO). Pedro Delgado won the 1988 Tour de France by a considerable margin, and in 1989 and 1990 Lemond returned from injury and won back-to-back Tours, with the 1989 edition still standing as the closest two-way battle in TDF history, with Lemond claiming an 8-second victory on the final time trial to best Laurent Fignon. The early 1990s was dominated by Spaniard Miguel Induráin, who became such an exceptional time-trialist that it didn't even matter that many top-level riders were experimenting with EPO. He won the time trials by such dominating margins that virtually nobody could compete with him, and as a result he became the first rider to win five Tours in a row. The influx of more international riders continued through this period, as in 1996 the race was won for the first time by a rider from Denmark, Bjarne Riis, who ended Miguel Induráin's reign with an attack on Hautacam. On 25 May 2007, Bjarne Riis admitted that he placed first in the Tour de France using banned substances, and he was no longer considered the winner by the Tour's organizers. In July 2008, the Tour reconfirmed his victory but with an asterisk label to indicate his doping offences. In 1997, the first German rider to win, Jan Ullrich followed, who in 2013 admitted to blood doping. 1998–2011 During the 1998 Tour de France, a doping scandal known as the Festina Affair shook the sport to its core when it became apparent that there was systematic doping going on in the sport. Numerous riders and a handful of teams were either thrown out of the race, or left of their own free will, and in the end Marco Pantani survived to win his lone Tour in a decimated main field. The