E140 PLT FLYING TURNS IN TOO CLOSE AND OVERSHOOTS THE FINAL REQUIRING A GAR.

Narrative

FLT WAS CONDUCTED FROM STL TO SGF. I WAS THE PNF. FOR OUR DSCNT INTO SGF; 3 ACFT WERE INBOUND. OURSELVES; ANOTHER REGIONAL JET S OF OUR LOCATION; AND A SINGLE ENG CESSNA OPPOSITE SIDE OF THE FIELD (NW OF FIELD?). THE CESSNA WAS CLRED TO ENTER A L DOWNWIND FOR RWY 2. WE WERE CLRED FOR THE VISUAL TO RWY 2. OUR DSCNT FROM ENRTE POSITIONED US TO ENTER A MIDFIELD R DOWNWIND FOR RWY 2. WE WERE CLRED TO LAND BEFORE THE OTHER REGIONAL JET WHO WAS TO OUR S. I DID NOT HAVE A VISUAL ON EITHER INBOUND TFC. THE R TURN TO BASE WAS CONTINUED INTO FINAL FOR RWY 2. AS THE ACFT WAS ROLLING OUT ON FINAL; IT WAS EVIDENT THAT WE OVERSHOT THE CTRLINE AND THE PATTERN WAS TIGHT. THE ACFT WAS KEPT IN THE R TURN TO REALIGN WITH THE RWY'S CTRLINE; THEN REQUIRED A L ROLLOUT FOR RWY HDG TO EXECUTE A GAR ON RWY HDG TO AVOID ANY PATTERN TFC. THE CAPT CALLED THE GAR TO THE TWR. THE TWR INSTRUCTED TO MAINTAIN RWY HDG. I GOT ON THE INTERCOM AND APOLOGIZED TO THE PAX FOR THE GAR AND THAT IT WAS WARRANTED DUE TO TFC CONFLICT. THE TWR THEN RECLRED US FOR L TFC FOR RWY 2; FOLLOWING A CESSNA AND REGIONAL JET. FURTHER ON DOWNWIND; WE PICKED UP A VISUAL ON BOTH TFC. THE LNDG CAME WITHOUT INCIDENCE. SUPPLEMENTAL INFO FROM ACN 574753: WE WERE ABLE TO SEE THE ARPT FROM APPROX 30 MI OUT. WE WERE APCHING FROM THE E; AS WELL AS THE OTHER REGIONAL JET. I KEPT THE PATTERN IN CLOSE TO AVOID DELAYS OF THE OTHER ACFT. DUE TO THE E WIND AND MY PROX TO THE RWY; I OVERSHOT FINAL. THIS PLACED ME TO THE W OF RWY 2. WE OVERFLEW THE RWY AND WERE INSTRUCTED TO ENTER A L DOWNWIND. AS SOON AS I REALIZED THAT I HAD OVERSHOT FINAL; I WAS COMMITTED TO GOING AROUND. EVERYTHING ELSE WERE ACTIONS TO AVOID OTHER POSSIBLE ACFT. I SHOULD HAVE EXTENDED THE DOWNWIND FURTHER TO ALLOW FOR A STABLE APCH. I WAS TOO CONCERNED WITH GETTING ON THE GND SO THE OTHER ACFT WOULD NOT BE DELAYED.