in a change from previous years, all players only play one match each night. as of 2012, it had sold over 4.15 million copies in the us. therefore, it is not certain that the ballot laws were the cause of the change. in the third round, he shot an 8-under 62, tying the course record, and moving him to within two shots of the leader. in this case, the two effects of assumed curvature and refraction could cancel each other out, and the earth will then appear flat in optical experiments. 