 Complete the following phrase:  After 1997, the team was unable to maintain their domice in Formula 1 as Renault ended their full-time involvement in Formula 1, and Adrian Newey moved to the rival team, McLaren. Williams then had to pay for Mecachrome engines, which were old, rebadged Renault F1 engines. This meant that the FW20 not only featured a very similar aerodynamic package to their 1997 car but also virtually the same engine, leading some to comment that they ran what was virtually the same car, adjusted for the 1998 regulations. There were changes on the sponsorship front, as Rothmans opted to promote their Winfield brand, replacing the popular blue and white livery with a red one. For , Williams kept both drivers from the previous season, the first time since that a reigning world champion remained driving for the team. While Ferrari and McLaren battled for the Constructors and Drivers titles, Williams fell to the middle of the field. The team won no races and took only 3 podiums during the season, with Frentzen finishing in third at the first round in 