The first day of the Miami Dolphins’...

The first day of the Miami Dolphins’ mini-camp featured quarterback Dan Marino, still limping but taking snaps and throwing in his most extensive workout since his season was ended by a torn Achilles’ tendon last October.

Andre Agassi has decided not to play Davis Cup for the United States in the quarterfinals against the Netherlands in July so that he can concentrate on improving his world ranking, now 20th. Agassi has a 20-4 record in Davis Cup singles.

Miscellany

Top players for the former East Germany’s national soccer league were given banned stimulants, sometimes in drinks they didn’t know were spiked, according to files of the Stasi, the country’s secret police, that confirm a report published in March in the Munich-based Sueddeutsche Zeitung newspaper. The Stasi files also gave new evidence of how the secret police agency controlled East German athletes. Bobsled racer Steffen Grummt said his file showed that the secret police put 17 informants on him after suspecting him of intending to flee the country, and his career was ruined in 1986.

Auto Racing

Ayrton Senna set a record, touring the 3.1-mile Ferrari track at Imola, Italy, in one minute 21.548 seconds in a Williams Renault, and beat out Michael Schumacher by 0.467 seconds for the provisional pole in the Grand Prix of San Marino.

Former NFL coach Jerry Glanville, 52, will start 22nd in today’s ARCA Food World 500k stock car race at Talladega Superspeedway in Alabama. Glanville turned a 186.430-m.p.h. qualifying lap. The pole was won by Jeff Purvis with a lap at 192.502.