Conversation so far:
Are there any other interesting aspects about this article about Nigel Mansell?
Since Nigel Mansell had left the Williams team in 1993, the team had undergone some significant changes.
What were some of the changes?
Damon Hill had been promoted from test driver and was running full-time in one Renault.
Were there any other changes nigel noticed?
Prost, Mansell's replacement, won the 1993 Drivers' Championship and then retired after the season.
How did Mansell do that first year back?
Nigel Mansel was not as quick as Damon Hill in race trim but signs that his speeds were coming back were evident in Japan during a battle with the Ferrari of Jean Alesi.

Question: What were they evident of since he wasn't doing as well?
Self-contained rewrite: What were they evident of since he wasn't doing as well?