Sam Tordoff got the better of his team-mate Jason Plato in an equally damp second British Touring Car Championship race at Donington, while the latter took over the championship lead in a chaotic race.
Tordoff, who finished on the tail of his MG KX Clubcard Fuel Save BTCC team-mate in race one, made a bold move around the outside heading through the first corner with greater traction to take the advantage of the MG duo instantly.
The pair were locked together once again for the majority of the encounter, Tordoff claiming his second ever BTCC win by just 1.028s from his team-mate Plato in a second one-two of the day for the team.
The race was blighted however by a series of incidents that trimmed the race running, starting after just the opening lap as Alain Menu was sent into a huge tankslapper across the grass coming out of Old Hairpin, the Swiss fortunate not to be collected as he swung across the circuit but unfortunate to be beached in the gravel.
Lea Wood, Marc Hynes and James Cole also had separate offs, the safety car deployed with Tordoff leading Plato and the fast-starting WSR BMWs of Rob Collard and Colin Turkington.
When racing got underway, Andrew Jordan quickly recovered to fourth place as he lunged by Turkington into Redgate, which instantly became third as the eBay BMW of Collard lost it and looped through the gravel heading down through Craner Curves.
The chaos continued, Rob Austin and Chris Stockton both spinning after contact at Redgate battling with Jack Clarke over position, while the more dramatic incident that followed seconds later saw Cole and Robb Holland both wrap themselves around one another and head firmly into the barriers.
The wreckage, which Holland described to The Checkered Flag afterwards as an unfortunate racing incident taking avoiding action, required a further safety car for a clear-up, where Ollie Jackson stopped out on track twice in the Welch Motorsport Proton Gen-2 to prolong to delay.
Tordoff and Plato escaped up front when racing resumed with nine laps to go, while the battle for third place developed between Jordan and Shedden, swapping places twice at Coppice before a mistake at Old Haripin by Jordan gifted the Scot third place.
Matt Neal took advantage of a mistake by Turkington into the chicane to claim fifth, both ahead of Mat Jackson, Aron Smith, Dave Newsham and Tom Ingram again claiming a top 10 finish.
The top six will be reversed for the third and final race of the day, meaning Turkington is promoted to pole position for that encounter to take place at 17:15.