OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating (FSR) of A (Excellent) and the Long-Term Issuer Credit Ratings (Long-Term ICR) of “a” of Infinity Insurance Company, its nine insurance subsidiaries and two affiliates, which are collectively referred to as Infinity. Concurrently, A.M. Best has affirmed the Long-Term ICR of “bbb” and the Long-Term Issue Credit Rating (Long-Term IR) of “bbb” on $275 million 5.00% senior unsecured notes due 2022, issued by Infini