Four Trinidad and Tobago athletes also competed in Stockholm--Richard Thompson, Jehue Gordon, Jarrin Solomon and Cleopatra Borel.
Solomon was second in the men's 400 metres in 46.18 seconds; Gordon (49.00) was fourth in the men's 400m hurdles; Thompson (10.23) was sixth in the men's 100m; and Borel (18.11 metres) was sixth in the women's shot put.
American Ryan Bailey won the men's 100-metre race in 9.93 seconds. Jamaicans Nesta Carter and Michael Frater finished second and third respectively, but failed to dip below the 10-second mark.
In the women's 400m, Richards-Ross moved in front of Montsho down the stretch and finished in 49.89 seconds. Montsho clocked 50.03, with Britain's Christine Ohuruogu taking third in 50.77.
"I feel good. Coming back for a race like this after the Olympics, you can feel physically and emotionally drained," Richards-Ross said. "But it went pretty well. And the atmosphere was fantastic."
American countryman Michael Tinsley also picked up a victory, beating Olympic champion Felix Sanchez in the 400m hurdles in 48.50 seconds. Dominican Sanchez finished 0.43 behind while Jamaican Leford Green was third in 48.97.
"I think it's pretty good to get your legs going after the Olympics," Tinsley said. "There is a lot of physical and mental stress going into the Olympics, so it's nice to come out and relax and run."
Sanchez, who only arrived in Stockholm from his home country on Friday, felt he couldn't have done much better under the circumstances.
"My legs are really tired and I didn't get out well at all," he said. "My stride pattern was all messed up, so I was happy to come second. I haven't been in Stockholm for 24 hours. My body is on auto-pilot right now."
Olympic triple jump champion Christian Taylor of the United States managed 18.72 yards to win his event. Ukraine's Sheryf El Sheryf was second, and Russian Lyukman Adams took third.
"It went wonderful today," Taylor said. "My hopes were high and every time I compete I try to go over that 17-metre barrier... Obviously I'm on a high from the Olympic Games and I am just so blessed to have a wonderful coach, and winning this has been the icing on the cake."
Shot put star Valerie Adams, coming off the New Zealander's second Olympic gold in London, dominated her event, throwing 22.16 yards. Russian Yevgenia Kolodko was second with her 20.87-yard throw, while Germany's Christina Schwanitz was third.
Source: www.trinidadexpress.com