Baltacha, Britain's former No. 1 women's player, died of liver cancer on May 4 at the age of 30.
Bartoli, who did not defend her title this year, took part in a coin toss ceremony ahead of the women's singles match between Sabine Lisicki, who lost to Bartoli in last year's final, and Julia Glushko.
Bartoli, wearing her Wimbledon members' tag, wiped away tears on several occasions during the ceremony. She was accompanied by nine-year-old Elle Robus-Miller, a player from the Elena Baltacha Academy of Tennis for underprivileged children.
Traditionally at Wimbledon, the women's singles champion opens play on the second day.
Lisicki beat Glushko in straight sets.
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