The second round of the 1990 500cc World Championship Road Racing Series.
With Eddie Lawson out due to a practice crash, Yamaha superstar Wayne Rainey was intent on maintaining his points lead.
Kevin Schwantz (Suzuki), Randy Mamola (Cagiva), Wayne Gardner (Honda) P Chili (Honda) and Kevin Magee (Suzuki) disagreed with this!
The 250 event saw a display of brilliant riding by John Kocinski (Yamaha), Reinhold Roth (Honda), Wilco Zeelenburg (Honda NSR250) and other quarter-litre stars.
The sidecars provided what many thought to be the best show of the day.
The classic battle between Alain Michel (France)/Simon Birchall and Steve Webster/Gavin Simmons will linger in many a memory for a long time.