Rubuta ci gaba don wannan sakin layi - Kafin 1990 Morales Motorsports ya rufe kuma Patrick Racing ya karɓi aikin Alfa Romeo tare da Guerrero yana tuka No. 20 Miller Genuine Draft Maris 90CA-Alfa Romeo Indy V8. Guerrero ya samu damar shiga Indianapolis 500
, farawa 28th kuma gama 23rd saboda lalacewar dakatarwa. Daga nan sai ƙungiyar ta canza zuwa amfani da &lt;a href="Lola%20Racing%20Cars"&gt; Lola T90/00&lt;/a&gt; farawa a Marlboro 500 a Michigan International Speedway. A tseren Guerrero ya gama a matsayi na 5. A ƙarshen kakar Guerrero ya gama na 16 a cikin maki tare da maki 24.