Iga Swiatek overcame a slew of unforced errors to secure her spot in the second round of the US Open with a 6-4, 7-6 victory over Russia’s Kamilla Rakhimova on Tuesday. Swiatek, who counts the 2022 US Open among her five Grand Slam titles, converted three of six break-point chances but also racked up 41 unforced errors en route to …