Brock Holt's cycle, feat as rare as no-hitter, makes Fenway history - ESPN - Boston Red Sox Blog- ESPN
August 9, 2018: Mookie Betts hits for the cycle, but Red Sox fall to Blue Jays – Society for American Baseball Research
Mookie Betts - Wikipedia
With World Series title, it's mission accomplished for Mookie Betts: 'I was traded for this reason' - The Boston Globe
Mookie Betts hits for first career cycle
Mookie Betts not ruling out playing second base in World Series - The Boston Globe
Red Sox right fielder Mookie Betts wins Gold Glove - The Boston Globe
Mookie Betts (3 HRs) powers Red Sox
Brock Holt completes first Red Sox cycle since 1996
MLB playoffs: Biggest blowouts in MLB postseason history