PARIS (AP) - David Ferrer extended his perfect career mark against Andreas Seppi to easily get back to the French Open's fourth round a year after reaching the final.
The fifth-seeded Ferrer improved to 7-0 against Seppi, 15-0 in sets, by beating the 32nd-seeded Italian 6-2, 7-6 (2), 6-3 at Roland Garros on Saturday.
Ferrer, who has lost a total of 26 games through three matches, will face No. 19 Kevin Anderson of South Africa for a place in the quarterfinals. Anderson advanced when Ivo Karlovic retired after one set Saturday.
In 2013 at Roland Garros, Ferrer reached his first Grand Slam final before losing to Rafael Nadal.
Karlovic stopped playing because of an injury after losing the first set of his third-round French Open match Saturday against 19th-seeded Kevin Anderson of South Africa.
Karlovic, at 35 the oldest man left in the field, dropped three games in a row to lose the opening set 6-3. He then was treated by a trainer, who massaged the 6-foot-11 (2.11-meter) Karlovic's back.
Anderson moves into the fourth round at Roland Garros for the second year in a row, matching his best showing at any Grand Slam tournament. In 2013, he became the first man from South Africa to reach the round of 16 in Paris since Wayne Ferreira in 1996.
Seppi is 1-50 in his last 51 matches against opponents ranked in the top 10.
Dusan Lajovic of Serbia will make his debut in the fourth round of a Grand Slam tournament after beating Jack Sock of the United States 6-4, 7-5, 6-3 Saturday at the French Open.
The 83rd-ranked Lajovic is playing in only his second major tournament. He lost in the second round at the Australian Open in January.
Lajovic saved 8 of 9 break points he faced against the 75th-ranked Sock, who was born in Nebraska and was trying to join John Isner as the first American men in the fourth round at Roland Garros since 2010.
Sock, 21, has yet to reach the final 16 at a major.
Before this French Open, the 23-year-old Lajovic had a 10-21 career record in tour-level matches, never winning two in a row.
Guillermo Garcia-Lopez of Spain thwarted a comeback attempt by Donald Young of the United States and beat him 6-2, 6-4, 2-6, 6-7 (4), 6-4 Saturday at the French Open, making John Isner the only American man in the fourth round.
The 41st-ranked Garcia-Lopez, who surprised No. 3 Stan Wawrinka in the first round, is in the final 16 at a major tournament for the first time.
Young, who is from Chicago, was trying to pull off his first victory in a match after dropping the first two sets, but Garcia-Lopez closed it out after more than 3 1/2 hours.
Isner's win Friday made him the first U.S. man in the fourth round at Roland Garros since 2010. The 79th-ranked Young and Jack Sock both lost Saturday while trying to join Isner.
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