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Usain Bolt and Yohan Blake set up another showdown as they both advanced to the 200 metres final at the Jamaican National Olympic trials.
After beating Bolt with a world-leading time of 9.75 seconds in the final of the 100m in Kingston on Friday, it was Blake who again went quicker on the Saturday as he won his semi-final in 19.93s.
Bolt also won his heat, clocking a time of 20.26.
All four big names progressed from the semi-finals of the women's 200m.
Two-time defending Olympic champion Veronica Campbell-Brown, Shelly-Ann Fraser-Pryce, Sherone Simpson and Kerron Stewart will face off in the final.
Meanwhile, Hansle Parchment, Andrew Riley and Richard Phillips booked their places at London 2012 in the 110m hurdles.