Kammala wannan jumlar: A watan Yulin 2019, Askew ya shiga gwajin Portland tare da Chip Ganassi Racing. A ranar 28 ga Oktoba, 2019, Arrow McLaren SP ya ba da sanarwar cewa Askew, tare da Patricio O'Ward, za su yi tsere na cikakken lokaci don ƙungiyar a cikin 2020. Wani mummunan hadari a
2020 Indianapolis 500 ya bar Askew tare da alamun alamun girgizar kai; bayan tsere a cikin abubuwan da suka faru hudu masu zuwa, Askew ya nemi magani kuma an cire shi daga zagaye na girbi Grand Prix. Daga baya an sake shi don dawowa don wasan karshe na kakar wasa. A ranar 12 ga Oktoba, AMSP ta sauke Askew a gabanin 2021 ba tare da bayar da dalili ba. Oliver Askew ya maye gurbin Felix Rosenqvist a cikin shigarwar # 7 AMSP a tsere na biyu na 2021 Detroit Grand Prix, saboda haɗari a ranar da ta gabata don Felix.